Related
Hello all
How often should you clear cache or fix permission using CWM?
Jim
Sent from my VEGAn-TAB using XDA
Personally I do it when ever the ROM that I am on starts acting a bit quirky. Which is not very often if you are running a stable build like VeganTab, CM7 or even the Froyo ROMs that have been out for a while. If you ever see yourself loading up a bunch of apps and running them allot. Over time you might would want to clear the cache and definitely fix permissions to get things back in order.
jweir said:
How often should you clear cache or fix permission using CWM?
Click to expand...
Click to collapse
They're not something you need to do often, or even occasionally, as part of some preventive maintenance regimen.
If you switch ROMs, then you will have to clear cache. Actually, it's best to do a "wipe data/factory reset" in CWM in this case--cache will get formatted in the process.
You would want to clear cache if you upgrade the current ROM; it is better, though, to instead wipe dalvik-cache. Similarly, if you upgrade an app manually--ie. not via the Market or the usual Android update process: eg. by overwriting an app in /system/app or /data/app and rebooting the system--you might want to clear cache.
You might have to clear cache after powering on the tablet after a long (weeks, months) period of inactivity. In this case, the battery will go flat and the system will lose its date and time--going back in time, so to speak. This might, in turn,cause cached data to go out of whack--though Android should take care of this normally.
The "fix permissions" step is needed even less. This link explains why you would want to use it: Again, it might be needed after a ROM update, and not otherwise. This means that doing a fix permissions after a SD card repartition or a wipe data/factory reset step is nonsensical--the fix_permissions script operates on existing data.
I was getting out of space on my internal phone, so I decided to clear wipe cache and dalvik cache through CWM, but I find i save a lot of space BUT some apps stop working, maybe they are lost. So was does this actually do? Why are the apps there, but can't work? :crying:
Ok, after rebooting they are actually working again, i didn't even lost any data (progress on games) but I am really concerned what does this really do??
rolo143 said:
I was getting out of space on my internal phone, so I decided to clear wipe cache and dalvik cache through CWM, but I find i save a lot of space BUT some apps stop working, maybe they are lost. So was does this actually do? Why are the apps there, but can't work? :crying:
Ok, after rebooting they are actually working again, i didn't even lost any data (progress on games) but I am really concerned what does this really do??
Click to expand...
Click to collapse
http://en.wikipedia.org/wiki/Dalvik_(software)
When you reboot, Dalvik cache and Cache are re-created. So no space saved this way.
Feanor88 said:
http://en.wikipedia.org/wiki/Dalvik_(software)
When you reboot, Dalvik cache and Cache are re-created. So no space saved this way.
Click to expand...
Click to collapse
I was wondering what wiping the Dalvik cache did, too. I installed an inverted app and someone told me I needed to wipe the Dalvik cache in order for it to remain in place after a reboot, so I did that. Now my phone says "Optimizing apps..." It must rbe e-creating the cache.
As far as I know, when a rom boots up for the first time Dalvik goes through each & every apk's & extract the Dex & put it in the cache. So probably it is a location of all apks. If dalvik cache is not wiped after a new rom is installed,dalvik cache will skip because it founds the dexed cache files attach to the directory. The result is "Force close" issues.
So wiping dalvik cache can be done without any problem many times within the same rom & that's why is shows "optiming apps" after a dalvik cache wipe.
saqib nazm said:
As far as I know, when a rom boots up for the first time Dalvik goes through each & every apk's & extract the Dex & put it in the cache. So probably it is a location of all apks. If dalvik cache is not wiped after a new rom is installed,dalvik cache will skip because it founds the dexed cache files attach to the directory. The result is "Force close" issues.
So wiping dalvik cache can be done without any problem many times within the same rom & that's why is shows "optiming apps" after a dalvik cache wipe.
Click to expand...
Click to collapse
Thanks! That's in line with my suspicion, except I didn't know when I posted my question that an apk file was nothing but a zip file that contains a dex (Dalvik executable) and a bunch of other files. Your explanation makes sense. I also noticed that if I install an individual app from a zip file using CWM Recovery, then it clears the relevant part of the Dalvik cache for me. That doesn't happen when I install an apk file directly using Root Explorer.
guys one line question i am performing "Wipe cache and dalvik-cache" will my phone internal memory be deleted ? thanks a ton
deepankarbu said:
guys one line question i am performing "Wipe cache and dalvik-cache" will my phone internal memory be deleted ? thanks a ton
Click to expand...
Click to collapse
Nop, it will not
Sent from my SK17i using xda premium
Phone didn't boot after wiping Dalvik Cache
Hi Geeks
i have an Xperia Arc S modded with Cyanogenmod JellyBean 4.1.2 Cooked ROM
i had alot of memory issues as applications keep closing whenever system runs out of memory, it is always obvious in the DSP application with the walkman in addition to visualizations inside the walkman
i searched for a solution and some told me that wiping the dalvik cache might solve the problem, so i gave it a try and rebooted in CWM recovery mode "built inside ROM" , cleared the Dalvik cache , and the phone keeps displaying the Xperia Logo without any further progress, as if it's in somekinda loop !
any idea what to do next without wiping my Data ? thank you all
BR
AMR
Koptanov said:
Hi Geeks
i have an Xperia Arc S modded with Cyanogenmod JellyBean 4.1.2 Cooked ROM
i had alot of memory issues as applications keep closing whenever system runs out of memory, it is always obvious in the DSP application with the walkman in addition to visualizations inside the walkman
i searched for a solution and some told me that wiping the dalvik cache might solve the problem, so i gave it a try and rebooted in CWM recovery mode "built inside ROM" , cleared the Dalvik cache , and the phone keeps displaying the Xperia Logo without any further progress, as if it's in somekinda loop !
any idea what to do next without wiping my Data ? thank you all
BR
AMR
Click to expand...
Click to collapse
Are you sure you only wiped the dalvik?
Sent from Myushi
clears app cache
rolo143 said:
I was getting out of space on my internal phone, so I decided to clear wipe cache and dalvik cache through CWM, but I find i save a lot of space BUT some apps stop working, maybe they are lost. So was does this actually do? Why are the apps there, but can't work? :crying:
Ok, after rebooting they are actually working again, i didn't even lost any data (progress on games) but I am really concerned what does this really do??
Click to expand...
Click to collapse
it clears the app running cache stored in os.
absolutely ..
XperienceD said:
Are you sure you only wiped the dalvik?
Sent from Myushi
Click to expand...
Click to collapse
Yes sir it's only the dalvik cache, both ways this ROM was pretty heavy and i'm not satisfied with the reboot every 2 or 3 hours of use, i will install xperia ultimate HD ROM, they say it's pretty stable and has no problems, and it has the sound enhancements i needed in the Jellybean cooked ROM
thanks for your reply
alcatel 918n
XperienceD said:
Are you sure you only wiped the dalvik?
Sent from Myushi
Click to expand...
Click to collapse
My phone also has those options built-in. If you did the dalvik only it should get back to where you have the icons. BUT, if you did something else aside from the dalvik, my guess would be goodbye data and hello to phone repairs. Please research first before you do anything on your phone. Your phone and my phone have very powerful built-in tools. It could brick the phone. I hope you did not wipe data and flash.
help! my phone's boot taking too long
i wiped /cache and dalvik cache and format /cache. it's taking took long. been waiting for almost 1 hour.
Lucky Patcher Dalvik-cache
I am getting out of space msg when using Lucky Patcher.....apk will be patched on boot......it says to clear dalvik cache to save space.....is this a good idea(will I loose any data from game etc?) or this a issue with lucky patcher?
Clearing Dalvik
Feanor88 said:
When you reboot, Dalvik cache and Cache are re-created. So no space saved this way.
Click to expand...
Click to collapse
Um, that would involve the re- "optimization" process at each boot. Depending on the number of apps you have installed, this process can take an hour.
Simply put, the Dalvik cache is where a virtual machine program (like VMware Player, Workstation or Fusion or MSVM) called "Dalvik" stores information the applications on your device request it to. This storage is for the purpose of making app load times shorter, but because it's all low-level stuff, it has to be loaded prior to the AndroidOS frontend...Fortunately, this cache only needs to be rebuilt when a flag has been set indicating the need, which is set whenever the cache is cleared. Note the distinction between "loading" and "rebuilding" this cache. "Load" is synonymous with "read" and "rebuild" means "write." So time-wise it is the distinction in effort between reading a book and writing one.
Typically I only clear it for troubleshooting reasons; if something is not working. The latest Cyanogenmod has a major problem where the desktop data is liable to randomly corrupt.
Typically, the only solution is a Dalvik wipe in CM or whatever. If you have recently installed a large number of apps(over twenty)then it might be best to clear the cache via recovery at the next cold boot, especially if your device does weird stuff like getting hot, discharging while plugged in to the OEM charger, widgets crash spontaneously, wallpapers are replaced by defaults, etc....Some of these symptoms can also indicate a virus or malware infection,(especially on custom ROMs or rooted devices) so diagnosis is differential.
But essentially there is no harm in re-building the Dalvik cache, other than the time taken to do so.
Koptanov said:
Yes sir it's only the dalvik cache, both ways this ROM was pretty heavy and i'm not satisfied with the reboot every 2 or 3 hours of use, i will install xperia ultimate HD ROM, they say it's pretty stable and has no problems, and it has the sound enhancements i needed in the Jellybean cooked ROM
thanks for your reply
Click to expand...
Click to collapse
CM has this new MAJOR stability issue, it seems. The random crashes and reboots will soon combine(if they haven't already)with the deletion of your desktop customizations and your widgets will begin vanishing forever. Not even a full wipe and rebuild will bring them back.
Been using AOKP on Nexus 7 2013 for a month now. It is based on CM, but it is way more stable.....haven't needed to re-boot in two weeks! Uptime, baby!
UPDATE 04/05/2014: Been running without rebooting for over a month, now. AOKP is definitely WAY more stable than any other ROM I've used.
Dalvik explained
Saqib Nazm said:
As far as I know, when a rom boots up for the first time Dalvik goes through each & every apk's & extract the Dex & put it in the cache. So probably it is a location of all apks. If dalvik cache is not wiped after a new rom is installed,dalvik cache will skip because it founds the dexed cache files attach to the directory. The result is "Force close" issues.
So wiping dalvik cache can be done without any problem many times within the same rom & that's why is shows "optiming apps" after a dalvik cache wipe.
Click to expand...
Click to collapse
There is a full explanation of the dalvik cache on wikipedia.
The wiki entry fully explains dalvik cache and the integral part it plays in your android system. In very simple terms, it is a cache that allows the system to talk to the exe of a program without the need to load the cache on each and every start. The dalvik is is loaded once, and then never again (unless you wipe the dalvik cache, in which case, it is rebuilt upon reboot). There is no affect on any given program when the dalvik cache is wiped, other than starting slower the first time it is started after the wipe.
Related (I think) - Samsung Galaxy S5 running CM 12.1 latest nightly (6-14). I started on CM 12.0 nightlies in March or April and transitioned to 12.1 within a day or two acter it showed up. That was a relatively noticeable transition requiring new gapps and a factory reset as I recall. I read somewhere that wiping cache and dalvik cache was unnecessary between one 12.0 nightly to another and between one 12.1 nightly to another, so I typically have not performed the cache and dalvik wipe during nightly upgrades, of which I've probably done 30 or 40 since I started on 12.0. After each nightly update flash, when I ask TWRP to reboot the system, without wipes, all my 160 or so apps are optimized, taking some time, before the noot is compete. This morning out of curiosity, after the nee ROM was flashed, I chose the option in TWRP to wipe the cache and dalvik cache before I askefasked TWRP to reboot the system. The wipe process took at least as long to complete as a typical optimization, and when I rebooted, I still got the lengthy optimization. So I'm tbinking either there's no relationship berween app optimization and wiping the caches, or CM and/or TWRP automatically wipes the caches whether I do or not.
---------- Post added at 12:58 PM ---------- Previous post was at 12:54 PM ----------
Please forgive typos in my previous post - SwiftKey or something is making proofreading and editing difficult today.
Not the exact answer, but may interests u.
Koptanov said:
Hi Geeks
i have an Xperia Arc S modded with Cyanogenmod JellyBean 4.1.2 Cooked ROM
i had alot of memory issues as applications keep closing whenever system runs out of memory, it is always obvious in the DSP application with the walkman in addition to visualizations inside the walkman
AMR
Click to expand...
Click to collapse
Hi, I do not have the exact answer. But I wanted to share my own observation. When I wipe dalvik caches through CWM recovery, I find my phone taking a long time to finish booting every time. Sometimes I thought it would not boot up, I removed the battery and tried to swith on and my phone boots up. I do not know why it happens, may be I had installed a large no of apps.
I've got Nexus 5 with bootloader unlocked , after few weeks security patch arrived and after the phone switched off and showed error symbol and when I entered recovery mode it showed that error in system/bin.sh files need some help here
Something strange happened to my S3 after a simple reboot I noticed that some app have been removed so I decided to clean my phone on the way.
I made a full wipe + everything you can think of to clean, delete, format the phone but after I install the rom I can still see my apps in the application manager and I can't get rid of them even if I uninstall them through the application manager the come back after a restart.
I tried 2 different roms but it happens on both of them, both are xxDLIB .
How to fix that?
pls help me
AriHell said:
Something strange happened to my S3 after a simple reboot I noticed that some app have been removed so I decided to clean my phone on the way.
I made a full wipe + everything you can think of to clean, delete, format the phone but after I install the rom I can still see my apps in the application manager and I can't get rid of them even if I uninstall them through the application manager the come back after a restart.
I tried 2 different roms but it happens on both of them, both are xxDLIB .
How to fix that?
pls help me
Click to expand...
Click to collapse
Try the SuperWipe from "Android Revolution HD" here --> http://forum.xda-developers.com/showthread.php?t=1797334
Be careful, this will erase everything that is not on your external SD-card. Read the instruction first.
AriHell said:
Something strange happened to my S3 after a simple reboot I noticed that some app have been removed so I decided to clean my phone on the way.
I made a full wipe + everything you can think of to clean, delete, format the phone but after I install the rom I can still see my apps in the application manager and I can't get rid of them even if I uninstall them through the application manager the come back after a restart.
I tried 2 different roms but it happens on both of them, both are xxDLIB .
How to fix that?
pls help me
Click to expand...
Click to collapse
Are the apps system apps perchance? A wipe of data WILL wipe all user installed apps, the full wipe script alluded to doesn't do anything that you can't do manually from recovery.
Sent from my GT-I9300 using Tapatalk 2
So you did a full whipe but did you do also a factory reset?
AriHell said:
Something strange happened to my S3 after a simple reboot I noticed that some app have been removed so I decided to clean my phone on the way.
I made a full wipe + everything you can think of to clean, delete, format the phone but after I install the rom I can still see my apps in the application manager and I can't get rid of them even if I uninstall them through the application manager the come back after a restart.
I tried 2 different roms but it happens on both of them, both are xxDLIB .
How to fix that?
pls help me
Click to expand...
Click to collapse
Sure the apps aren't part of the ROM. Depends on what the dev has cooked into it.
Sure you're doing a full wipe vs wiping caches only.
Could also be syncing to your Google account meaning when you launch play store it automatically detects your market links and reinstalls previously installed apps
Sent from my SG3
CWM Recovery mounts and storage FORMAT system cache data and preload .
That fails wipe internal sd card .
jje
explanation
I think I didn't explained my self right, these apps are "user" apps downloaded from Play store.
things I did before installing the rom:
1. factory reset from setting.
from cwm:
2. wipe data/factory reset
3. wipe cache partition
4. wipe dalvik-cache
5. wipe battery stats
5. format /cache
/system
/data
/preload
/sdcard
* also I removed the external sd.
but still I have these app "ghosts"
Then i suggest as per previous replies to the same question you are auto downloading from Google play after installing a rom .
jje
JJEgan said:
Then i suggest as per previous replies to the same question you are auto downloading from Google play after installing a rom .
jje
Click to expand...
Click to collapse
I disabled wifi/data and sync when it ask for a wifi connection (at the openning screen of the new rom) so there is no way it somehow sync with play store.
you can see below what I mean by saying "ghosts"
imageshack.u s /a/img59/3716/screenshot2012100201142.png
AriHell said:
I disabled wifi/data and sync when it ask for a wifi connection (at the openning screen of the new rom) so there is no way it somehow sync with play store.
you can see below what I mean by saying "ghosts"
imageshack.u s /a/img59/3716/screenshot2012100201142.png
Click to expand...
Click to collapse
I wonder what kind of apps behaving so stubborn and weird. Mind sharing the apps name?
Sent from my GT-I9300 using xda app-developers app
Well.. I don't think it happening because of the app, any way here are some names (from the picture above)
google chrome
betterbatterystats
aide
sdtools
and many other
What rom are you using?
Sent from my GT-I9300 using Tapatalk 2
I tried Omega, HyperGalaxy and WanamLite
Could possibly be a problem with your CWM installation or any dependencies such as ?busybox
Ok so I installed Samsung 4.1.1 stock rom and reinstalled CWM and afterwards install Omega rom and it worked!!!
Clean Rom Install
Many people don't exactly know what a Data Wipe / Factory reset is. NO it does not delete "all" your data on Internal SD-Card. It Deletes all you user data and settings and stuff, like it says it formats "system". For Example if you Full wipe you loose Whatsapp, but the Whatsapp folder on your internal SD-Card remains untouched, that means you can restore your Conversations with ease. This means you can cause a huge mess on your internal SD-Card over time. This is my way how to do a CLEAN install. Doing this prevents many unwanted issues like Bootloops, FC's and all those other nasty laggy ****.
1. Put new rom on EXTERNAL SD Card (if slot available)
2. Data Wipe / Factory Reset
3. Wipe Cache
4. Wipe Dalvik Cache
5. Format Internal SD card
6. Install Rom and enjoy
Keeping your personal Data on your external SD-Card is a good idea (pics, music, vids , docs ...)
[You can do this even if you don't have an ext. SD-Slot. After "cleaning" your device mount USB-Storage in CWM Recoery and you can connect to pc and pull over your rom. ]
And this is probably one of the best ways to do a clean install without aditional Scripts like superwipe or other "flashy" stuff. (DO NOT USE THOSE SCRIPTS UNLESS THEY ARE IN AN INSTALLATION GUIDE)
One addition to above format/preload as well .
jje
hi,
this ROM works very nice for me, thanks all the deveopers!
i have few questions:
(1) since this ROM has OTA updater (it seems, from the changelog), next time when the new version is realeased, can i just update the ROM via OTA updater?
(2) i dont really understand what “Wipe cache/dalvik” and “Wipe data / factory reset” really do. my guess is that “Wipe data / factory reset” repartitions the internal flash memory of the original memory, so we can use all the memory for our purpose. (not like original Nook Tablet, in which they dedicate only 1GB for personal usage)
if i understand all these correctly, this means next time if i flash the new ROM and want to keep the old data, i should not do "Wipe data / factory reset", but only need to do "Wipe cache/dalvik"? is this correct?
thanks so much,
Jun
junkoi said:
hi,
this ROM works very nice for me, thanks all the deveopers!
i have few questions:
(1) since this ROM has OTA updater (it seems, from the changelog), next time when the new version is realeased, can i just update the ROM via OTA updater?
(2) i dont really understand what “Wipe cache/dalvik” and “Wipe data / factory reset” really do. my guess is that “Wipe data / factory reset” repartitions the internal flash memory of the original memory, so we can use all the memory for our purpose. (not like original Nook Tablet, in which they dedicate only 1GB for personal usage)
if i understand all these correctly, this means next time if i flash the new ROM and want to keep the old data, i should not do "Wipe data / factory reset", but only need to do "Wipe cache/dalvik"? is this correct?
thanks so much,
Jun
Click to expand...
Click to collapse
Wipe data/factory reset is an option in CWM Recovery. Really all it does (from the screen messages) is format both /data and /cache.
Assuming you have CWM Recovery (though I imagine that there are similar entries in TWRP, I've just never used it), to wipe both of the caches you will first need to go to the entry "Wipe Cache Partition", which I believe is directly below Wipe Data/Factory Reset. Do that 3x (that's always been the recommendation, anyway) then go to Advanced and click on Wipe Dalvik Cache (again, 3x).
Again, assuming CWM Recovery, when you're in the recovery Vol Up/Down goes up and down in the list, the 'n' key is for Enter, and the Pwr button goes back.
I don't know about the OTA Updater. I always download and install ROMs (on both my phone and my NT) via Recovery.
Since this is a CM10 based rom you probably don't want to do the ota updater since that is a Cyanogenmod feature. This rom is optimized for the Nook from the CM10 Source I would presume. I personally tried the ota uldater since i get the notifications all the time but i get an error message something like "can't verify the source with a string of numbers". Stick to the recovery based flash installation.
Sent from my SPH-L710 using xda app-developers app
---------- Post added at 10:48 AM ---------- Previous post was at 10:10 AM ----------
I agree with liquidzoo that you should probably do the wipe cache, wipe dalvik cache and factory reset 3times seems like overkill but you can never be too safe. Also i use twrp recovery and click the system button and wipe system a few times as well.
Sent from my SPH-L710 using xda app-developers app
kobhomye said:
I agree with liquidzoo that you should probably do the wipe cache, wipe dalvik cache and factory reset 3times seems like overkill but you can never be too safe. Also i use twrp recovery and click the system button and wipe system a few times as well.
Sent from my SPH-L710 using xda app-developers app
Click to expand...
Click to collapse
I wipe /system 3x as well (under Mounts in CWM Recovery) when I'm installing a new ROM.
liquidzoo said:
I wipe /system 3x as well (under Mounts in CWM Recovery) when I'm installing a new ROM.
Click to expand...
Click to collapse
I'm not picking on you personally, but deleting and/or wiping partitions (in the case of /system) or directories (dalvik-cache) three times as opposed to once is completely unnecessary. You'll gain nothing by running the command three times over running it once, assuming you received no errors the first time.
When wiping the dalvik cache, both CM recovery and TWRP perform an "rm -rf /data/dalvik-cache" command using the shell. It's not Windows, and is unlikely to fail when passed the "-f (force)" option along with the "-r (recursive)" option.
In the case of wiping the /system partition, again both CM and TWRP write out zeros to clear the data on the partition. I would be suprised if CWM acted differently from CM and TWRP when wiping dalvik-cache and /system.
The only reason I bothered to look into what these commands actually do is to prevent a user from thinking there's a corellation between a failure to wipe 3x versus a problem they're having. If a 3x wipe "fixes" something for you, whatever the problem was, it's very unlikely that the second or third wipe was what fixed it but instead it was more likely a result of a clean install of the ROM.
References from source:
TWRP Wipe Dalvik - https://github.com/TeamWin/Team-Win...548de276b62c0e9af8661e/extra-functions.c#L986
TWRP Wipe/Format System - https://github.com/TeamWin/Team-Win...8de276b62c0e9af8661e/mtdutils/mtdutils.c#L498
CM Wipe Dalvik - https://github.com/CyanogenMod/andr...aa7ff3d06d5dd115b16c/extendedcommands.c#L1292
CM Wipe/Format System - https://github.com/CyanogenMod/andr...aa7ff3d06d5dd115b16c/mtdutils/mtdutils.c#L498
Have fun modding!
No worries, it's just something I've always done as it's been recommended to me in the past (there are some ROM developers that recommend 5x, actually). I'm not saying that 3x over 1x is any better, but I've never had issues. YMMV, but it doesn't take much more time and I like being thorough.
liquidzoo said:
Wipe data/factory reset is an option in CWM Recovery. Really all it does (from the screen messages) is format both /data and /cache.
Assuming you have CWM Recovery (though I imagine that there are similar entries in TWRP, I've just never used it), to wipe both of the caches you will first need to go to the entry "Wipe Cache Partition", which I believe is directly below Wipe Data/Factory Reset. Do that 3x (that's always been the recommendation, anyway) then go to Advanced and click on Wipe Dalvik Cache (again, 3x).
Click to expand...
Click to collapse
sorry, but can you confirm that when i upgrade to the new ROM (from the same author), it is really necessary to Wipe cache &Dalvik cache?
i am confused because somebody told me that i can just flash the ROM by installing the ZIP file (containing the ROM), and reboot the Nook without having to wipe or clean anything.
thanks,
JK
Flashing a ROM
junkoi said:
sorry, but can you confirm that when i upgrade to the new ROM (from the same author), it is really necessary to Wipe cache &Dalvik cache?
i am confused because somebody told me that i can just flash the ROM by installing the ZIP file (containing the ROM), and reboot the Nook without having to wipe or clean anything.
thanks,
JK
Click to expand...
Click to collapse
I don't know if I am doing it right or wrong but I have flashed numerous ROMs and lately have flashed every version of SGT7+CM10+Cherry Picks,By meghd00t. from 24/09 thru my current installation of 08/10 with only one glitch and that was when I flashed enhancements v2 on top of v1.
I have never had any other issues with the above mentioned ROMs except when I flashed 04/10 with enhancement v2. I didn't have the tablet option.
The way I do it is as follows:
1. format /system
2. format /data
3. Flash ROM
4. Flash CWM emmc
5. Flash GAPPs
6. Reset Factory/format data
7. Remove CWM SD card put in data SD Card with Flash Player (no longer avail on Google Play)
8. Boot from CWM menu
Takes awhile to boot this first time. When booted up I bypass the setup screens.
9. Manually set up wireless (need to access auth web site at work and need wireless to be working to accomplish that)
10. Browse to a web site and get redirected to auth page.
11. Auth
12. Set up Google account and other settings, especially under Security <Install from other locations>
13. Download apps I want from Google.
At this first boot SD card is not mounted.
14. Shut down and do a cold boot.
Now I can see SD Card.
15. Install Flash Player from External SD Card.
16. Install Crackle from Play Store.
Now I check Pandora for Audio, Crackle for Video, other apps I use, utilities, keyboards, launchers, games, etc.
So far since Version 24/09 everything has worked for me with the two exceptions above, tablet mode with 04/10 with enhancement v2 and when I flashed enhancement v2 over enhancement v1.
I am now running 08/10 and am very happy with the performance, battery drain is more than CM7 but that is to be expected from a fairly new ROM but not so bad that it is unacceptable, to me at least.
I have never had a black screen or arbitrary reboot (knock on wood). However I do turn my tablet off when I am finished using it, so don't know about deep sleep. I'm using OnDemand, and three launchers without one being the default....Apex, Nova and Trebucket.
All I can say is these developers really ROCK, way to go guys!
--------------------------------------------------------------------------------
MojoGB said:
The way I do it is as follows:
1. format /system
2. format /data
3. Flash ROM
4. Flash CWM emmc
5. Flash GAPPs
6. Reset Factory/format data
7. Remove CWM SD card put in data SD Card with Flash Player (no longer avail on Google Play)
8. Boot from CWM menu
Click to expand...
Click to collapse
You don't need to re-flash CWM every time you flash a ROM. Also, it doesn't make sense to me why you would do a factory reset/format after flashing the new ROM, I would think it would be done prior to flashing the ROM but maybe it doesn't make a difference, I don't know.
I've got TWRP installed to the emmc so I just download the new ROM to the SD with GooManager, reboot into recovery, do a backup, factory reset, flash new ROM & GApps and reboot. Only takes a few minutes.
Reflash ROM
LifeWOutMilk said:
You don't need to re-flash CWM every time you flash a ROM. Also, it doesn't make sense to me why you would do a factory reset/format after flashing the new ROM, I would think it would be done prior to flashing the ROM but maybe it doesn't make a difference, I don't know.
I've got TWRP installed to the emmc so I just download the new ROM to the SD with GooManager, reboot into recovery, do a backup, factory reset, flash new ROM & GApps and reboot. Only takes a few minutes.
Click to expand...
Click to collapse
Tried it as you mentioned, doing a factory reset before flashing the ROM and got a black screen and wouldn't boot. May have been a fluke but the way I mentioned above gives me a good image and alway boots. Don't know why, but if it works for me, I will continue to do it this way as long as it works for me. I have flashed numerous other ROMs the same way with good results each time.
junkoi said:
sorry, but can you confirm that when i upgrade to the new ROM (from the same author), it is really necessary to Wipe cache &Dalvik cache?
i am confused because somebody told me that i can just flash the ROM by installing the ZIP file (containing the ROM), and reboot the Nook without having to wipe or clean anything.
thanks,
JK
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Click to collapse
For an update, yes it is recommended to clear both caches. To be clear, this is only for an update. If it is a new ROM, or if the author recommends it, you should also wipe /data and /system first.
You can just flash without clearing them, but you might run into unexpected issues, so it's not recommended.
MojoGB said:
Tried it as you mentioned, doing a factory reset before flashing the ROM and got a black screen and wouldn't boot. May have been a fluke but the way I mentioned above gives me a good image and alway boots. Don't know why, but if it works for me, I will continue to do it this way as long as it works for me. I have flashed numerous other ROMs the same way with good results each time.
Click to expand...
Click to collapse
I get a black screen for a while on first boot too, but it only last a couple minutes at the most and if you shine a bright light at the screen you can see the CM logo spinning. Are you sure it was hung?
Sent from my Barnes & Noble Nook Tablet using xda premium
When you clear the Dalvik cache, it clears out data stored in your applications. When you turn on your Nook after clearing the Dalvik, the first thing it does is it rebuilds the Dalvik cache, that's why it seemed like it hung on startup. I believe the long black screen in the beginning is when it rebuilds Dalvik for core Android apps and then when it says "Optimizing Apps", that's for the rest of your applications. The more apps you have, the longer it will take to build the Dalvik. No need to freak out, just a little patience is all you need. Correct me if I'm wrong, however, as I'm still pretty much a noob at this... :laugh:
Flash a Rom
topdawg7793 said:
When you clear the Dalvik cache, it cleares out data stored in your applications. When you turn on your Nook after clearing the Dalvik, the first thing it does is it rebuilds the Dalvik cache, that's why it seemed like it hung on startup. I believe the long black screen in the beginning is when it rebuilds dalvik for core Android apps and then when it says "Optimizing Apps", that's for the rest of your applications. The more apps you have, the longer it will take to build the dalvik. No need to freak out, just a little patience is all you need. Correct me if I'm wrong, however, as I'm still pretty much a noob at this... :laugh:
Click to expand...
Click to collapse
Well fhe screen was black, no light at all and I waited for over five minutes for the Flash Screen to come up and it never did. Yes I know when you are waiting time drags. But due to the ROMS always taking awhile to boot up the first time I actually pay attention to how long it takes. No more then 2 minutes in my experience. I had to hold the power button in for a long time until it finally booted in B&N Recovery. Used my sequence mentioned in earlier post to flash the ROM again and everything worked as it should, GREAT. The number of APPs shouldn't be an issue as these ROMS only have the very basic apps.
I have read this forum and see the various and asundry errors some are getting, so far I have never gotten a major error, except for when I forgot to do the Wipe Data/Factory Reset after flashing.
I also got the "No Tablet Mode Option" with 04/10 with enhancement v2.
But I consider these minor issues and currently am running 08/10 with no issues, works smoother then any version of Microsoft Windows I have dealt with.
These developers are exceptional.
MojoGB said:
I don't know if I am doing it right or wrong but I have flashed numerous ROMs and lately have flashed every version of SGT7+CM10+Cherry Picks,By meghd00t. from 24/09 thru my current installation of 08/10 with only one glitch and that was when I flashed enhancements v2 on top of v1.
I have never had any other issues with the above mentioned ROMs except when I flashed 04/10 with enhancement v2. I didn't have the tablet option.
The way I do it is as follows:
1. format /system
2. format /data
3. Flash ROM
4. Flash CWM emmc
5. Flash GAPPs
6. Reset Factory/format data
7. Remove CWM SD card put in data SD Card with Flash Player (no longer avail on Google Play)
8. Boot from CWM menu
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Click to collapse
oh, so you always reset factory every time you upgrade the ROM? that way will delete all the old data/apps you installed, so you need to install all the apps again?
this is my concern, because i dont want to reinstall apps, or lose my data. so i think i just need flash the new ROM, then Wipe cache/Dalvik cache, and hopefully all the old apps and data are still intact.
thanks.
MojoGB said:
I don't know if I am doing it right or wrong but I have flashed numerous ROMs and lately have flashed every version of SGT7+CM10+Cherry Picks,By meghd00t. from 24/09 thru my current installation of 08/10 with only one glitch and that was when I flashed enhancements v2 on top of v1.
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Click to collapse
i have some questions on the "Enhancements":
(1) the correct way to install them is to flash version 1 first, then immediately flash version 2 right after version 1 (without having to reboot first)?
(2) i am not sure what i will get with this "enhancements". they will make video/audio playing more smoothly? is the quality improvement really noticable? anything else, like they make the battery last longer, for example?
thanks,
Jun
If you're running 08/10, the enhancements are not needed. That's my understanding at least. I had problems with V2 so I decided to not install them while on 04/10.
Sent from my Barnes & Noble Nook Tablet using xda premium
Flash Rom
junkoi said:
i have some questions on the "Enhancements":
(1) the correct way to install them is to flash version 1 first, then immediately flash version 2 right after version 1 (without having to reboot first)?
(2) i am not sure what i will get with this "enhancements". they will make video/audio playing more smoothly? is the quality improvement really noticable? anything else, like they make the battery last longer, for example?
thanks,
Jun
Click to expand...
Click to collapse
If you flash enhancement v2 on top of version 1 you will have problems, UI will stop. If you only flash v2 you will not have the Tablet Mode Option. So my understanding is that you can use either v1 or v2 but not both.
ROM 08/10 does not need either enhancement as indicated by the developer. ROM 08/10 works great by itself is my experience.
If I'm installing a ROM, backup the existing ROM and wipe everything.
If I'm installing a .zip package like GApps or an enhancement, backup the existing ROM, wipe Data/Dalvik.
Folks, these are development ROMS. Thar be bugs in thet thar code. It's going to take you longer than the time you think you're going to save by doing a dirty flash, and then having to restore the thing to stock (worse case) only to start all over.
Don't ask how I know.
wellersl said:
If I'm installing a ROM, backup the existing ROM and wipe everything.
Click to expand...
Click to collapse
so it is possible to back up the existing data/apps, then restore them back after the new ROM is flashed? could you please confirm this?
if so, how & what is the right steps to do the backup? can we still use CWM, or use ROM Manager, or other tools?
thanks
Hey everyone, I am looking for a little clarification on something. I have a Canadian Rogers i717r. I am running the stock Rogers Jellybean ROM I717RUXMD1_I717RRWCMD1_RWC, with root. Recently, I have been noticing some issues with it hanging, and doing other odd things, so I just think it is time for a reinstall. I may have installed a bad app or something along the way, because it does happen from time to time. My main question is this: How do I do a complete system wipe? Now I am talking every old file, so there are no remnants of the old information left. I have done the factory wipe and dalvik wipe, along with the cache wipe, prior to installing a ROM, every time I have done a new ROM install.. It always seems to leave files behind though. Old game files will still be there and such. Is there a way to get rid of it all, so it is a complete clean slate for the install?
Now, I use TWRP, but the idea is generally the same when it comes to this procedure, and I have found these instructions online;
-- The correct procedure for doing a full wipe is below.
Go to clockworkmod recovery.
Volume up, power button, and home button all pressed together for a couple of seconds.
Go to Advanced menu and wipe the dalvik cache and batt stats if present!
Go to mounts and storage and select it.
Go to format / system and select it.
Scroll down to format system and select yes.
Go to format / data and select it
Scroll down to format data and select yes.
Go to format / cache and select it.
Scroll down to format cache and select yes.
Now go back and install the rom from the internal or external sd card.
This is the correct way of doing a full wipe everything is erased and formatted ready for the new rom, no old system files, old kernel remnants etc....
I am curious as to what will have to be done after the install is complete. I am going to lose ALL of the info. I would basically need to redo all the programming on the phone, including the IMEI and all the info for the networks and what the phone needs to recognize what network it is allowed to access and such. Is this what it will boil down to? I will basically need to reprogram the behind the scenes info also, or no?
Thanks in advance!
Shad
ShadNuke said:
Hey everyone, I am looking for a little clarification on something. I have a Canadian Rogers i717r. I am running the stock Rogers Jellybean ROM I717RUXMD1_I717RRWCMD1_RWC, with root. Recently, I have been noticing some issues with it hanging, and doing other odd things, so I just think it is time for a reinstall. I may have installed a bad app or something along the way, because it does happen from time to time. My main question is this: How do I do a complete system wipe? Now I am talking every old file, so there are no remnants of the old information left. I have done the factory wipe and dalvik wipe, along with the cache wipe, prior to installing a ROM, every time I have done a new ROM install.. It always seems to leave files behind though. Old game files will still be there and such. Is there a way to get rid of it all, so it is a complete clean slate for the install?
Now, I use TWRP, but the idea is generally the same when it comes to this procedure, and I have found these instructions online;
-- The correct procedure for doing a full wipe is below.
Go to clockworkmod recovery.
Volume up, power button, and home button all pressed together for a couple of seconds.
Go to Advanced menu and wipe the dalvik cache and batt stats if present!
Go to mounts and storage and select it.
Go to format / system and select it.
Scroll down to format system and select yes.
Go to format / data and select it
Scroll down to format data and select yes.
Go to format / cache and select it.
Scroll down to format cache and select yes.
Now go back and install the rom from the internal or external sd card.
This is the correct way of doing a full wipe everything is erased and formatted ready for the new rom, no old system files, old kernel remnants etc....
I am curious as to what will have to be done after the install is complete. I am going to lose ALL of the info. I would basically need to redo all the programming on the phone, including the IMEI and all the info for the networks and what the phone needs to recognize what network it is allowed to access and such. Is this what it will boil down to? I will basically need to reprogram the behind the scenes info also, or no?
Thanks in advance!
Shad
Click to expand...
Click to collapse
First, If you're currently using TWRP I'd suggest updating to the latest version, if you haven't already. There's a few of the newer ROMS which specifically require it. On the question of wiping, before you get too carried away it might help you to backup a few things. Within TWRP (ver 2.8.1.0) you have the options to backup EFS (anywhere you please, Internal storage, internal SDcard or MicroSD card) by clicking on the Storage: bar just above the swipe icon. Your IMEI >> located within EFS folder. Also, search the TWRP website for more specific instructions. What you posted is CW instructions. Hope it helps!
LOOK HERE!!
TWRP version 2.8.1.0: http://teamw.in/project/twrp2
TWRP XDA post: http://forum.xda-developers.com/showthread.php?t=2551499