I have a 16 GB Nook tablet currently running CM7 that I want to upgrade to CM10.
I installed CMW 6.0.1.5 to emmc and booted to the CWM installed on emmc. I tried to run backup.
It starts, reports 5477MB free, backups up boot image, recovery image, and system. Then it says
Freeing space,
Done freeing space.
Then it starts backing up files. It gets about 75% done and stops at enroll.ok
It's been stuck there for 20 minutes. What can I do?
Maybe this will help.
I would try the backup on a new or blank SD to narrow down the issue.:fingers-crossed:
Bonnie_Raitt said:
I have a 16 GB Nook tablet currently running CM7 that I want to upgrade to CM10.
I installed CMW 6.0.1.5 to emmc and booted to the CWM installed on emmc. I tried to run backup.
It starts, reports 5477MB free, backups up boot image, recovery image, and system. Then it says
Freeing space,
Done freeing space.
Then it starts backing up files. It gets about 75% done and stops at enroll.ok
It's been stuck there for 20 minutes. What can I do?
Click to expand...
Click to collapse
Vector2nds said:
I would try the backup on a new or blank SD to narrow down the issue.:fingers-crossed:
Click to expand...
Click to collapse
Well, there's the rub. I have tried backing up from both SD card (with CWM 6.0.1.2) and emmc (with CWM 6.0.1.5).
When using emmc CWM, I have tried both backing up to external SD card and to internal SD card. Both start, but never finish
If you tried with a totally blank sd at boot and using internal cwm then it still does not complete, I sorry that I couldn't help.:fingers-crossed:
Bonnie_Raitt said:
Well, there's the rub. I have tried backing up from both SD card (with CWM 6.0.1.2) and emmc (with CWM 6.0.1.5).
When using emmc CWM, I have tried both backing up to external SD card and to internal SD card. Both start, but never finish
Click to expand...
Click to collapse
Have you tried to wipe cache and reset permissions. Do you have a lot stored to the emmc ie: books, videos etc? What size SD card are you using?
Sent from my CM 10 SD nook tablet. Thanks devs.
SlowCobra96 said:
Have you tried to wipe cache and reset permissions. Do you have a lot stored to the emmc ie: books, videos etc? What size SD card are you using?
Sent from my CM 10 SD nook tablet. Thanks devs.
Click to expand...
Click to collapse
I'll try wipe cache and reset perms tonight. Thanks
emmc is pretty stock. No photos,vids,music,etc.
I use a 16 GB Sandisk SD card. Don't have any issues with card or ROM when running CM7.
Bonnie_Raitt said:
I'll try wipe cache and reset perms tonight. Thanks
emmc is pretty stock. No photos,vids,music,etc.
I use a 16 GB Sandisk SD card. Don't have any issues with card or ROM when running CM7.
Click to expand...
Click to collapse
Well, I just finished fixing perms and wiped cache. I rebooted, then restarted and enter CWM. I tried running both backup to internal and backup to SD card. Both got part way done, then froze [incidentally they froze at different spots]. I had to power down to reboot.
Im about to say "to heck with backups" and just go ahead and upgrade without it
Yep, that's what I did too and probably most of cm10 testers.
Bonnie_Raitt said:
Well, I just finished fixing perms and wiped cache. I rebooted, then restarted and enter CWM. I tried running both backup to internal and backup to SD card. Both got part way done, then froze [incidentally they froze at different spots]. I had to power down to reboot.
Im about to say "to heck with backups" and just go ahead and upgrade without it
Click to expand...
Click to collapse
Related
i upgraded my HTC Hero (villainrom12.0) to villainrom13.0 and now i'm stuck at the boot screen forever. however if i remove my SD card it is able to boot. how can i fix it?
You can try to do a ful wipe
alright thanks. i finally fix it, i do a full wipe, formatted my SD card, and reflash the rom. first boot i have to remove the SD card for the phone to boot, then after everything is set up, i reinsert the SD card and reboot and everything's works just fine. down side is i lost all my previous apps.
by the way is it normal after flashing the villainrom13.0 i only have 30+MB for my internal memory. and Apps2SD doesnt seems to work.
ah..... not trying to bash you or anything but you do realize how old the villian rom is right?.. lol
my bad wrong forum lol ment to be in cdma
you lost your apps because you did wipe the data. didn't you make a backup with titanium?
loveuallso said:
by the way is it normal after flashing the villainrom13.0 i only have 30+MB for my internal memory. and Apps2SD doesnt seems to work.
Click to expand...
Click to collapse
Flash this file. The problem will be resolve. From 30+MB up to 159MB. Good luck
musikenigma said:
Flash this file. The problem will be resolve. From 30+MB up to 159MB. Good luck
Click to expand...
Click to collapse
Not working for me? Care to share your step by step instructions?
This how I tried.
Partitioned my SD Card FAT32 and EXT2 (tried EXT3 as well) -512MB
Copied ROM zip and Dalvik2SD patch to root.
Boot into recovery.
Flash the ROM
Flash the patch
Checked the internal memory size before installing any app. (avg 160MB free) Also checked EXT(2/3) size.
Installed bunch of apps. internal size reduced, nothing changed in EXT(2/3) size.
Am I missing anything?
Thanks
@nbhor : before flashing the rom have u wiped data/factory reset, wipe dalvik cache and wipe ext just to be sure?
Ciprilik said:
@nbhor : before flashing the rom have u wiped data/factory reset, wipe dalvik cache and wipe ext just to be sure?
Click to expand...
Click to collapse
Yes, followed all instructions from newbie guide. Wiped everything off. Now I am just worried about installing iGo, as it takes big chunk of memory.
Ooo
Boot into CWM and go to advanced and then show log. see if you have any errors. I would personally do a partition wipe. If this works, from a running system, go to rom manager and do a fix permissions.
Ooo
Yes, from CWM, 4th option down. 'wipe cache partition'
You will lose only things that are stored in the cache. Similar to clearing cookies on a PC. Android will create a new cache upon next boot (which will take a little longer than normal)
Ooo
Might be your sdcard. Backup everything and format it with SDFormatter then copy your files back,if you keep receiving errors about sdcard you could have a faulty sdcard.
You could also backup your data with titanium backup, boot into CWM make a backup of current ROM and make a fresh install of a new ROM, there are stock, CM7 and MIUI as CWM flashable zips for easy install in CWM pick the one you need, flash it and restore your apps with titanium backup (preferably only app not app+data as you're getting databases errors).
Make a backup of your new ROM in CWM once you finish setting it up as you want for precaution. Remove your old backup.
NOTE: If you install CM7 again make sure you have latest build (Internal: Alpha12 | sdcard: Final). Also verify the md5 of the download so you know its not corrupted.
~ Veronica
Sent from my Nook Tablet using xda premium
Ooo
Ooo
jenuhferr said:
Spoke too soon. TB still won't let me backup due to insufficient storage space. Now it says that my SD card is 200mb and I only have 1mb free??? I took SD card out and put back in, no change, reboots no change. Evernote is complaining too. WTF How can a card just go bad??
Laptop is saying the same. Considering reformatting and trying again?
Sent from my Nook Tablet using XDA
Click to expand...
Click to collapse
You mentioned that you flashed CM7 sd image right? so you have to resize the last partition to the end of your sdcard. Last partiton is the one that will act as "sdcard".
~ Veronica
Oop
jenuhferr said:
Using easus partition master, resized the last partition to use unallocated space and nook said 200mb SD card anyway. I don't get it.
----------
Used different software and partition resized. This time set up started which I didn't see before. All seemed fine, started adding some apps from the market since I have no backup.
Suddenly it rebooted and bypassed/ignored the SD card and booted into the previous set up. I powered off, removed/replaced SD card then booted but same thing. I started to post HERE and it rebooted with the SD card! Then it rebooted into the previous set up without the card.
Was.thinking of doing the internal install. Does this indicate a bad SD card or problem with nook seeing it? Considering a surface scan in windows?
Click to expand...
Click to collapse
It looks like because seems that the Nook Tablet unmount your sdcard or it unmount itself randomly, so if you are running a ROM from sdcard it's logical it will reboot because no system is found. Try with another sdcard if possible to know better if its a software issue or hardware sdcard issue.
~ Veronica
lg gt540
i have root my lg gt540 with z4 and shows me "Sorry! Process system is not respondig. I can press force close or wait but wathever i choose appears black background please help. :crying:
Hi all, I built my sdcard per: http://iamafanof.wordpress.com/2012/...r-nook-tablet/ (built by"Succulent")
My kids have two NT's. With two 16GB Sdcards, one class4 the other class 10. I know class4 is recommended, but one poster in forums said he's taken images of CM built on class4's and applied this image to class 10's in several cases and has had no problems. So I thought what the heck, can't hurt to try, so that's what I did (using Winimage). It booted fine 5 or 6 times for me, and I installed several APK's of games from Humble Bundle . I turned over the Nook to my little girl and she brought it back to me later showing she gets errors on boot, after swiping the lock symbol to unlock it. One is "Unfortunately, Talk has stopped". If you click OK on this, you get ""Unfortunately, Trebuchet has stopped". Clicking OK on this does nothing, it keeps popping up indefinitely. I don't know if the sdcard is hot pluggable (can be removed with power to the tablet), but she did admit to doing this. So I'm wondering if some corruption occurred to the CM build on the sdcard. Has anyone seen these errors? I could reflash it from the image I made off the class 4, but want to understand what happened so we don't run into it again. The funny thing is, I don't recall the startup wizard off the 1st class4 card prompting me with several screens regarding Google crap like it did on the 2nd card which was flashed from the same image. That was even after telling it I had no Google acct hoping it would leave me alone.
can anyone explain the boot menu you get when you press the N button? (I'm not including the faded selections) I'm wondering especially about the recovery options. Here's my menu:
INT BOOT ( I assume will boot to B&N native OS?)
INT RECOVERY ?
SDC RECOVERY ?
SDC BOOT (Iassume, boot to CM10 off sdcard?)
SDC ALTBOOT ?
START FASTBOOT ?
baytee said:
...
So my question is, can anyone explain the boot menu you get when you press the N button? (I'm not including the faded selections) I'm wondering especially about the recovery options. Here's my menu:
INT BOOT ( I assume will boot to B&N native OS?)
INT RECOVERY ?
SDC RECOVERY ?
SDC BOOT (Iassume, boot to CM10 off sdcard?)
SDC ALTBOOT ?
START FASTBOOT ?
Click to expand...
Click to collapse
Yes,
internal boot - boots Rom in emmc
Internal recovery - recovery in emmc
Sdcard boot - boots your sdcard Rom.
Sdcard recovery - boots sd card recovery ( keep recovery.img in root of sdcard for it to load recovery)
Sdcard altboot - alternate recovery ( not necessary, unless you want both cwm and twrp at same time)
Fastboot - fastboot mode , fastboot commands to flash .img file etc with this method .
As for your problem, try entering recovery, wipe cache and dalvik cache partition (I've done this on emmc version, never tried sdcard version of any Rom) this may solve the issue. If not try factory reset.
And removing sdcard while device is switched on is called hot swapping , hot plug is a CPU governor. Not sure if sdcard roms are hot swappable, but I think not.
Sent from my ST27i
Thanks.
emmc=internal nook memory I assume?
Oh, and...just to clarify, I haven't modified (rooted) my tablet. (you mention factory reset). I should mention that with the sdcard out, it boots B&N OS just fine.
And the part you say about wiping the two caches, so I should go into SD Card Recovery to do that? Once you get into it, you have various choices like the ones you mention? (I'd read that this choice was to backup your NT to sdcard). And please, I want to be very, very careful not to wipe out the B&N stock OS, so please, any detailed instructions you can give so I don't make that mistake, I'd greatly appreciate it. (I see so many posts on these forums about people bricking their Nook tablets it worries me.)
baytee said:
Thanks.
emmc=internal nook memory I assume?
Oh, and...just to clarify, I haven't modified (rooted) my tablet. (you mention factory reset). I should mention that with the sdcard out, it boots B&N OS just fine.
And the part you say about wiping the two caches, so I should go into SD Card Recovery to do that? I'd read that this choice was to backup your NT to sdcard. But once you get into it, you have various choices like the ones you mention? And please, I want to be very, very careful not to wipe out the B&N stock OS, so please, any detailed instructions you can give so I don't make that mistake, I'd greatly appreciate it. (I see so many posts on these forums about people bricking their Nook tablets it worries me.)
Click to expand...
Click to collapse
Um I don't know much about how it works for sdcard Rom. I've always only used emmc version. I guess if you were to enter recovery, it would access the stock cache partition by default , and we aren't trying to clear that.
Try this - use titanium backup (only talking about your sdcard Rom here, nothing to do with your stock) and in options, you may be able to wipe your cache or dalvik cache.
Or,
boot into your sdcard Rom, in settings > backup and restore > factory reset. This will delete all user data and return Rom to original Cm10 that you flashed on sdcard.
Or if it's only google talk and trebuchet launcher issue, install a new launcher (go launcher, adw etc) , then use titanium backup to uninstall trebuchet and talk.
Sent from my ST27i
From what I see, titanium backup is an android app. If I can't boot to Android (Trebuchet error loops as I said) I don't know how I can install this to do anything? Nor can I install another launcher or go into Settings as the error doesn't let you get any further.
I guess if there was a way to browse files/folders on the sdcard partitions on the sd to manually delete the cache files.....but if they're linux partitions (ext3 or4) you can't do that under windows...
baytee said:
From what I see, titanium backup is an android app. If I can't boot to Android (Trebuchet error loops as I said) I don't know how I can install this to do anything? Nor can I install another launcher or go into Settings as the error doesn't let you get any further.
I guess if there was a way to browse files/folders on the sdcard partitions on the sd to manually delete the cache files.....but if they're linux partitions (ext3 or4) you can't do that under windows...
Click to expand...
Click to collapse
In cwm, enter mounts and backup, then (if) you see /sdcard /cache, mount that and format that ONLY.
Do not format anything else as some options can brick device (Rom, bootdata, factory etc)
Wiping cache is safe (99%)
Again, I have never used sdcard Rom so I don't know what will show up in your recovery. But if you see something like sdcard cache, it can be cleared. If it doesn't specify sdcard, let us assume it refers to stock emmc.
Sent from my ST27i
How do I get into CWM?
baytee said:
How do I get into CWM?
Click to expand...
Click to collapse
Select SDC Recovery on the Cyanoboot boot menu -- see steps 7 & 8 of the post at http://forum.xda-developers.com/showthread.php?t=2061536.
If you want to backup the BN stock ROM just in case, see step 9.
digixmax said:
Select SDC Recovery on the Cyanoboot boot menu -- see steps 7 & 8 of the post at http://forum.xda-developers.com/showthread.php?t=2061536.
If you want to backup the BN stock ROM just in case, see step 9.
Click to expand...
Click to collapse
I chose sd recovery, chose Backup & Restore, then Backup. It started running right away. It said:
SD Card space free: 228MB
Backing up boot image
Backup of boot image completed
Backing up recovery image
Backup of recovery image completed
Backing up system
Error while making a backup image of /system!
I plug sdcard into PC card reader and the FAT partition has 0 bytes free. So, appears it ran out of space. I saw your comment about 600MB space being needed. So I'm redoing the partitions now.
baytee said:
I chose sd recovery, chose Backup & Restore, then Backup. It started running right away. It said:
SD Card space free: 228MB
Backing up boot image
Backup of boot image completed
Backing up recovery image
Backup of recovery image completed
Backing up system
Error while making a backup image of /system!
I plug sdcard into PC card reader and the FAT partition has 0 bytes free. So, appears it ran out of space. I saw your comment about 600MB space being needed. So I'm redoing the partitions now.
Click to expand...
Click to collapse
Why backing up now when it's not working? Fix your issue, then make a backup. So the next time there's a problem you can restore to working condition.
Sent from my ST27i
Well, backing up, I think, was a good suggestion by Digimax. So I'm glad I did it. and now i know how to do it for future. Just in case anything EVER goes wrong, I'll always have that image now on my pc. Bad thing was, apparently B&N nook OS apparently keeps lots of APKs around after installing them. I had to make my 1st fat32 partition over 2GB for the entire backup to process without running out of space. backup size=1.6gb
I ran into lost chains - convert to cluster msgs trying to delete the folder of the first failed backup, but it never would delete even after a chkdsk, so I formatted the card and put the original image back onto it, adjusted the partitions, and then ran into a new probem.....the Cyanomod spinning logo never stopping spinning so it won't boot up. So I give up. I don't know if it's that it's a class 10 card that all these problems are happening. barring any other suggestions, I guess I'll make sure the other NT we have runs stable for a few weeks and if so I'll order another class 4 like that one has.
baytee said:
Well, backing up, I think, was a good suggestion by Digimax. So I'm glad I did it. and now i know how to do it for future. Just in case anything EVER goes wrong, I'll always have that image now on my pc. Bad thing was, apparently B&N nook OS apparently keeps lots of APKs around after installing them. I had to make my 1st fat32 partition over 2GB for the entire backup to process without running out of space. backup size=1.6gb
I ran into lost chains - convert to cluster msgs trying to delete the folder of the first failed backup, but it never would delete even after a chkdsk, so I formatted the card and put the original image back onto it, adjusted the partitions, and then ran into a new probem.....the Cyanomod spinning logo never stopping spinning so it won't boot up. So I give up. I don't know if it's that it's a class 10 card that all these problems are happening. barring any other suggestions, I guess I'll make sure the other NT we have runs stable for a few weeks and if so I'll order another class 4 like that one has.
Click to expand...
Click to collapse
I don't know about your bootloop issue, but I don't think it's a sdcard class issue.
Anyhow, now that you have stock backup, aren't you going to consider flashing cm10 internally? Do you actually use stock?
Sent from my ST27i
I'm a little leery of it, at least while it's under warranty. I don't know how reliable recovery is.? Besides, my daughter wasn't thrilled with it being down for several days with me fussing with it and asked if she could have her "B&N boot" back I admit It is a bit of a pain having to pull it out of it's case, lift the flap, pop-in or out the sdcard to switch between them. (& also to have to remember to always turn it off b4 removing/inserting)
I may do it in the future though. Thanks for the help
FWIW, you don't have to actually remove the card to boot into stock. Just reboot, hold "n" to get into Cyaonoboot menu and choos "int boot" or something like that, and it will boot to stock with the sd-card still inserted.
Great, thanks for that tip!
Card died
I think many of these symptoms could have been caused by a dying card. It did have a corruption error once, and then it finally completely died. Just for anyone else that runs into these.
baytee said:
Well, backing up, I think, was a good suggestion by Digimax. So I'm glad I did it. and now i know how to do it for future. Just in case anything EVER goes wrong, I'll always have that image now on my pc. Bad thing was, apparently B&N nook OS apparently keeps lots of APKs around after installing them. I had to make my 1st fat32 partition over 2GB for the entire backup to process without running out of space. backup size=1.6gb
...
Click to expand...
Click to collapse
FWIW, /cache does not need to be backed up, which should help reduce the backup space requirement.
I want to remove files that have accumulated from other roms. In others words like stock, but with custom rom. I like Beanstown106 with SD swap.
Thats a little tricky with sd swap but you will have to painstakingly go file by file and see if it's something you have deleted to something that you are still using. If you have any apps that created a folder and are gone for good then you are safe to delete. But avoid any system app folders and anything that you are still using like pictures, music and so on avoid.
M.A.D.NoTe.||
thx for help
I'm installing cleanrom ace 4.9 my goto rom next to beanstown106. No SD swap and I was thinking of formating SD card. Now how do I erase what a factory reset won't delete.
I usually wipe EVErYTahING wenever i flash something new sd card and all just to start from scratch but all i got on sd card is pix and music so its easyily backed up
SAPPERJD said:
now how do I erase what a factory reset won't delete.
Click to expand...
Click to collapse
from recovery, format internal and external sd. that will wipe everything out completely.
I did consider formating from recovery. I'm just scare of deleting the OS and my phone ending up being useless. I did research and what I read it won't. Any advise is welcome THX to everyone.
SAPPERJD said:
I did consider formating from recovery. I'm just scare of deleting the OS and my phone ending up being useless. I did research and what I read it won't. Any advise is welcome THX to everyone.
Click to expand...
Click to collapse
How would it end up being useless? Its no different than a pc...your reformatting and installing the OS on a clean slate.
I was thinking if I formated the internal it would delete recovery as well. And had no way of installing a new rom. Thx again really help full.
Wipe Everything
droidstyle said:
from recovery, format internal and external sd. that will wipe everything out completely.
Click to expand...
Click to collapse
I want to clean up my directory structure. If I format the internal and external sd using recovery (TWRP) to wipe everything, what rom will boot? Will my custom rom boot or will the original verizon rom boot? Will I have to unlock the bootloader again? Thanks.
rechbo said:
I want to clean up my directory structure. If I format the internal and external sd using recovery (TWRP) to wipe everything, what rom will boot? Will my custom rom boot or will the original verizon rom boot? Will I have to unlock the bootloader again? Thanks.
Click to expand...
Click to collapse
you will lose all data and need to reflash the rom in recovery...no you will not have to unlock again, nothing performed from recovery will overwrite the boot.img.
I was scared of the losing my OS as well, but it's not that hard. Treat it as two steps. Formatting your sDCard, and then prepping your SdCard by doing a Nandroid backup to your SdCard, and copying a flashable ROM (and kernel if your ROM does not flash a kernel) to your SdCard. Before formatting your SdCard copy anything you want to keep to your computer. I just copy the whole card to my computer.
Reboot and do your data resets and wipes, including internal storage (format data in twrp) Then flash your ROM that you put on your ext SdCard. Your nandroid backup is your insurance. Worst case you boot into recovery and restore your backup.
(But you should still have a working toolkit or ADB on your computer and you can recover from any screw up)
As long as you have what you need on your (ext) SdCard before wiping internal storage, and you only do a data reset and cache wipes and only do 'format data' you will be fine.
Sent from my Nexus 7 using xda premium
Okay, so my phone wasn't sending messages all of a sudden. I have a P769 on jelly bean rooted. I restarted it and it got stuck in a bootloop over and over again after countless battery removals. I used CWM and tried to restore my backup of JB rooted, and all I got was a bunch of force closes. So I restored to my 10G rooted on ICS. All of my Google apps were gone and I went to take a picture and it said my internal memory was full and wouldn't read my SD card. I did factory resets and nothing works. I'm not sure what else to try.. any help would be appreciated!
Edit: I finally got JB to load and it would scan my SD card, then reboot itself while it was still up and running? I could see my backlights on my buttons flashing. So I took out my SD card, same thing. I wiped the cache and reformatted my SD card and now i'm getting an error message saying that my UIDs are inconsistent and it won't let me do a thing on the phone. My phone was fine 12 hours ago.. I haven't downloaded a thing or accessed anything at all.
dcon025 said:
Okay, so my phone wasn't sending messages all of a sudden. I have a P769 on jelly bean rooted. I restarted it and it got stuck in a bootloop over and over again after countless battery removals. I used CWM and tried to restore my backup of JB rooted, and all I got was a bunch of force closes. So I restored to my 10G rooted on ICS. All of my Google apps were gone and I went to take a picture and it said my internal memory was full and wouldn't read my SD card. I did factory resets and nothing works. I'm not sure what else to try.. any help would be appreciated!
Edit: I finally got JB to load and it would scan my SD card, then reboot itself while it was still up and running? I could see my backlights on my buttons flashing. So I took out my SD card, same thing. I wiped the cache and reformatted my SD card and now i'm getting an error message saying that my UIDs are inconsistent and it won't let me do a thing on the phone. My phone was fine 12 hours ago.. I haven't downloaded a thing or accessed anything at all.
Click to expand...
Click to collapse
I know the UID inconsistent error from my previous phone. Wipe data. Solves the problem.
Sent from my LG-P760 using Tapatalk 2
How did you 'reformatted sdcard' ? Are you talking about internal memory(built in) or external memory (microsd)?
If you have some fresh backup system like 20x STOCK or whatever. (you can download it from XDA)
After this actions it will totally format your phone. You will no longer have system, apps, files that were on internal memory. It's kind of format C: on computer! So make sure you have backup on your external sdcard (microsd) and make sure to don't format your external sdcard.
I did it few times when I was messing around with custom ROMs so it's safe. I'm owner of P760 but don't think so if it will cause some problems.
1.Then you can go into CWM and mounts and storage and format following:
/cache
/data
/system
/sdcard - it is INTERNAL MEMORY (built in)
2.and then Advanced -> wipe dalvik cache
3. backup and restore -> restore from external sdcard -> choose your backup
maxver0 said:
How did you 'reformatted sdcard' ? Are you talking about internal memory(built in) or external memory (microsd)?
If you have some fresh backup system like 20x STOCK or whatever. (you can download it from XDA)
After this actions it will totally format your phone. You will no longer have system, apps, files that were on internal memory. It's kind of format C: on computer! So make sure you have backup on your external sdcard (microsd) and make sure to don't format your external sdcard.
I did it few times when I was messing around with custom ROMs so it's safe. I'm owner of P760 but don't think so if it will cause some problems.
1.Then you can go into CWM and mounts and storage and format following:
/cache
/data
/system
/sdcard - it is INTERNAL MEMORY (built in)
2.and then Advanced -> wipe dalvik cache
3. backup and restore -> restore from external sdcard -> choose your backup
Click to expand...
Click to collapse
I've wiped the data like the previous answer, and I also tried this.. I went into CWM and formatted all of this and wiped the dalvik cache, then tried to restore from external sdcard, which I tried my JB and ICS and neither worked. Right now I am on my JB and it just gets stuck at the T-Mobile 4G logo.
EDIT: I tried formatting everything and restoring from my external sdcard and my phone won't recognize my sdcard anymore. It says there are no files on it, but I try it on another phone and I can see the files.
I've had something along these lines before on my Huawei Honor. I never did work out what was wrong. I asked on xda and it was suggested that the partitions on the phone had resized/gone corrupt.
I'm not saying this is what has happened in your case. The sudden force closes and then no boot is what my Honor did.
Can you get software update mode to come on? Switch off, hold volume up and plug in usb from pc.
Sent from my LG-P768
Yes I had the same problem when I upgraded from ics to jb. Never figured out what happened but I copied all my files to the computer then I formatted my external sd. After the format I just copied all the stuff back on the card. Also cwm doesn't work for the second partition. Good luck.
Sent from my LG-P769(20d) using the xda-developers app. Press the thanks button if I helped you.