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Hi All,
Just got my S2 last week. Planning to move to CM7 this weekend. I have rooted the device and am on the Codeworkx kernel. I had a few questions:
1. Is there a problem while flashing via Odin if Debugging is not enabled (I think it is more of a OS feature which we haven't entered when in download mode, so shouldn't matter according to me.) ? I tried to disable debugging, and then went to download mode and Odin did detect the phone, but I did not try to flash anything so if anyone has tried that, your input is more than welcome.
2. The reason for above question is: What if I completely brick my phone (with debugging disabled) and no ROM .zip in the sd storage, how do I get the phone up and running ? I understand that I can flash kernels via Odin, but is it true for ROMs as well ?
3. What's the issue with ROM manager ? Is it recommended to stay away from it for S2 ? I have tried to do a Nandroid backup and it always takes me to the Android robot with a exclamation mark screen. Then I have to reboot and the backup magically restarts and completes successfully. Most people have suggested to use CWM recovery directly, so not sure if I should get rid of the ROM manager altogether.
That should be all for now. I have a jig ready by the way, so am not that worried about the process and plan to do a fair bit of reading before proceeding, however, the answers to above queries would be really great !
Thanks in advance,
Ish
I can answer some of your doubts.
I don't know if you can flash via odin in case you don't have the usb debuggin enabled so I'm not going to say anything about it.
Anyway if something happens to your phone and you dont have any ROM on your sd card but you have CWM recovery installed (which is almost everytime the case) then in CWM there is a mount usb stoage option. With it you can easily transfer .zip ROM files to flash, or even a nandroid backup you saved in your PC.
ABout ROM manager, this is what I suggest you. The first time you flash CM7 don't use ROM Manager (I even tried using it with the codeworkx kernel with no luck). Now, once you are in CM7 it works perfectly and it's really helpful to flash nightlies withouth wiping data (I flash half the nightlies as they are realeased). So the first time you flash CM7 wipe everything (do a nandroid backup first), even wipe /system, /data, cache partition, dalvik cache, so you don't have any problems. THen install zip from sd card and when it finish install the zip file again (just two installs in a row no wiping in beween, trust me, the first time I tried I didn't do that and couldn't boot the phone).
Hope it helps.
EDIT: You can flash stock ROM via odin, there is a thread by infratech were this is explained and you have a list of downloable stock ROMS you can flash with Odin, these are region and carrier specific and you probably will get the one for your carrier. I found the stock ROM for my carrier and I'm from chile, you shouldn't have any problems with that. Well, good luck, CM7 is by far the best ROM I've flashed.
Oh another thing, go for the latest nightly since the battery life is incredibly improved over the RC (or was it stable?) version.
Thanks !
tomascunill said:
Anyway if something happens to your phone and you dont have any ROM on your sd card but you have CWM recovery installed (which is almost everytime the case) then in CWM there is a mount usb stoage option. With it you can easily transfer .zip ROM files to flash, or even a nandroid backup you saved in your PC.
Click to expand...
Click to collapse
Awesome ! This is exactly what I was looking for. I haven't dived into all the options of the CWM, so didn't know that this feature existed.
Also, many thanks for explaining most of the things in a single concise post, it was very helpful. I'll have to check the ROM flash with Odin, so I will search for that thread and have a go through it later today.
Once I get a hang of CM7, I'll go in for the nightlies as well. And yes, I did read about the CM7 guys revert the status to an RC because of the bugs reported, so will give it a try once I definitely know what I'm getting into .
Thanks again,
Ish.
cheemais said:
Awesome ! This is exactly what I was looking for. I haven't dived into all the options of the CWM, so didn't know that this feature existed.
Also, many thanks for explaining most of the things in a single concise post, it was very helpful. I'll have to check the ROM flash with Odin, so I will search for that thread and have a go through it later today.
Once I get a hang of CM7, I'll go in for the nightlies as well. And yes, I did read about the CM7 guys revert the status to an RC because of the bugs reported, so will give it a try once I definitely know what I'm getting into .
Thanks again,
Ish.
Click to expand...
Click to collapse
Well good luck! Tell me if you get any problem.
Hi all
ok so i'm a bit nervous writing this expecting all manner of attack in that i may be posting something that's been posted before lol, i've been working on this phone from start to finish about 9 hours, over two days..... i've googled just about every combination of words to do with the title and everything in between but nothing seems to come close to what i actually need to do as nothing works
i have an LG Optimus 2x / p990, it had ICS on it but was far too slow to handle this, it needs something a bit less hardware intensive to run smoothly, so i went ahead an found cyanogenmod stable ...... 7.2 i installed sdk after an hour of finding out how it works i finally got adb and fastboot working, i then needed this, that, this, that, etc etc etc.....
to cut a 9 hour story short, i've managed to get myself to the point where i wiped the phone of everything but CWM partioned for ics via the AIO software but CWM will not let me install any ROM onto the phone. to be more precise it says i have installed CM 7.2 successfully! (i've tried this via the CWM via external SD card and sideload) i reboot the phone it's as if i've never done a thing, no trace or suggestion i've even attempted it on the internal card... nothing
i'm at the point now where i'm quite happy to just have my phone back now and install ICS 404 but can't use the LG kdz install software as the pc doesn't see the phone as an LG p990 because it's recovery and i can only get it to come up as internal and external memory cards
i'm not really a noob when it comes to tech stuff but this little phone has me stumped.... please, i'm begging you, help me any operating system that can get my phone working will do, preferably the CM 7.2 if not back to ICS 404?
and i know, i know i should have backed up but i had no idea it could be so complicated just to put an OS on a tiny computer
ETA i've tried that exitrecovery.zip thing and it did nothing :/
It's quite simple
Try to reset and unroot/re-lock the phone then unlock and root, then what you need to do is get ROM Manager and get the Clockwork Recovery and the version that supports your device, although you might need to hook up your phone to your computer for the process to work.
Also put back in ICS 4.0.4 when unrooted and re-locked again like stock and make sure it's the stock file for your phone.
And after you got ROM Manger and the Clockwork Recovery
Then just in Clockwork wipe out all data on the device and don't do a factory reset in Android just with clockwork and delete everything that was made on that phone then install CyanogenMod.
After that it will seem to take a long time or just a while to boot up and then it boots faster then the original ROM.
If you have Clockwork Recovery just wipe out all the data while it's still in there and you should be set.
When it was my first time putting in CyanogenMod it was 10.1 RC1 on my Nexus 7 and it didn't work and forever bootlooped, and that was because i forgot to wipe the device. Then after going into Recovery with Clockwork I deleted all the data of my tablet and it worked but took 5 mins. to boot up which is nomal.
And if Clockwork doesn't work, do the same with TWRP (Team Win Recovery Project) and download that which can be found here teamw.in/project/twrp
If you don't want to get ROM Manager or that one isn't working then try this website to get Clockwork because it has the whole list of devices and I recommend downloading from the website instead of their app. clockworkmod.com/rommanager
cheers for that, i've tried all of the above still to no avail, having a think about it the phone is partioned for ics, i'm trying to install CM 7.2 which as i understand isn't ICS so.... maybe the error is that it's a different partioning sequence/setup i'm gonna go for CM 10.1 and see if that makes a difference.
to add i'm not sure why everyone rants and raves about CWM, TWRP seems much more complete and advanced do you (or anyone else) know the main differences?
twelfty said:
cheers for that, i've tried all of the above still to no avail, having a think about it the phone is partioned for ics, i'm trying to install CM 7.2 which as i understand isn't ICS so.... maybe the error is that it's a different partioning sequence/setup i'm gonna go for CM 10.1 and see if that makes a difference.
to add i'm not sure why everyone rants and raves about CWM, TWRP seems much more complete and advanced do you (or anyone else) know the main differences?
Click to expand...
Click to collapse
TWRP has a completely touch driven interface that is 100% themeable, while CWM has a touch version and non-touch version. Also TWRP has a built in file manger and terminal emulator where as CWM does not. A lot of people like TWRP because it provides a lot of good features with a simple and straightforward yet powerful user interface. I would recommend taking a look at this guide if you want more information on the differences between the two http://www.droidiser.com/2013/04/twrp-vs-clockworkmod-recovery.html?m=1.
Sent from my SCH-I535 using xda premium
ok i managed to do it i can't remember exactly how but some good links and info for anyone who stumbles across this in need of help
i went for cyanogenmod 10.1 to make this work i used this AIO tool - http://forum.xda-developers.com/showthread.php?t=2020737
repartioned with OLD partion layout and BL
installed TWRP (included in the aio)
if you need to reinstall the google play store make sure you have right version if you flash it and get "unfortunately setup wizard has stopped" repeatedly you have the wrong version see this link for which one you need http://wiki.cyanogenmod.org/w/Gapps
obviously make sure you have adb and fastboot setup and drivers too.... it's a long process installing the entire sdk, personally for flashing this once and most definately not inclined to do it again i'd go with just the adb and fastboot rather than the whole sdk
also i found a keyboard error with 10.1 where i'd type 1,2 or 3 characters and the keyboard would minmise not sure if there's a proper fix (i found one thing where you disable the autocorrect but didn't want to do that) so i decided to download and install hackers keyboad which is based on the gingerbread keyboad and is much better and comes with full features and integrates nicely
coupled with the info above from YoyoscratchMC and you should be in the field
good luck to all i was ready to jump out my window with my phone first so i could land as hard as possible on it last night but i got there in the end lol
This will help anyone who keeps having flashing issues.
More detailed instructions in my GUIDE!
http://forum.xda-developers.com/showthread.php?t=2295557
THIS IS ONE QUICK/SIMPLE ERROR FREE ROM FLASHING PROCEDURE
This should eliminate a few posts saying, stuck in download mode, stuck at logo. just vibrates and them MANY other issues that somehow, everyone seems to find.
Here is my quick rom flashing process I use ALWAYS (yes always)
THINGS YOU NEED ON extSDCARD
1. Extra kernels (2 or 3 you know works for your device)
2. Optional: 2 recoveries that can be flashed (I use CWM & TWRP)
3. Optional: apps.zip (a zip created from Titantium BU, containing Root Explorer, TU Backup, Quickpic, ES File Explorer and Terminal Emulator)
Flashing the rom: TOUCHWIZ/AOSP ROMS
1. Backup current rom (to the extsdcard)
2. Complete wipe, (I do complete, some people do not) Complete = No Issues [FACTORY RESET + CLEAR CACHE + CLEAR DALVIK CACHE + CLEAR DATA]
3. Flash the rom
4. Flash the kernel (your device kernel) (I know some roms have their own kernel) this is where your problems start.
AGAIN: FLASH YOUR KERNEL, you KNOW it works. 1 more time FLASH YOUR KERNEL. (you can experiment with other kernels after you boot)
AOSP ROMS - require you to flash gapps before you boot. [This is not required for TouchWiz roms]
5. Boot the rom.
FINISHED!!!! SUCCESS!!!
Total time to flash a rom:
7-10min
Errors - NONE
This goes for every rom in my guide.
TIPS:
This flash procedure is for Touchwiz Roms, if you are flashing AOSP roms, you must flash the gapps package associated with the rom you are flashing.
**** SGH-I337M Users: Often requires flashing a different kernel than the one included in most ATT ROMS. Any GT-i9505 kernel will work and Adam kernel and Faux kernel are both confirmed working for us Canadian users.
Note: Flash KERNEL directly after ROM then reboot device.
[Special thanks to blyndfyre for this helpful tip].
The extra recovery I flash if a rom does not like the recovery I am using.
Yes, you can flash recoveries back and forth.
Apps.zip I flash after the rom is up & running. This I use to get the rom setup (like root explorer and others needed)
I am in no way responsible for anything that may do damage to any device - Use these tips at your own risk - period!
If you found this useful in any way, please hit the THANKS button for my effort.
RESERVED
TheAxman said:
Any questions? Anyone.
Click to expand...
Click to collapse
I've been running into a lot of issues when trying to flash different ROMs. For instance, right now I'm on CleanROM 1.6 - I just tried to install PureGv2.
Steps I took:
Have Goo and ROM Manager installed after clean install of CleanROM 1.6
Flash CWM from ROM Manager
Install Recovery Script from Goo
Reboot into recover from Goo
TWRP loads
Wipe data, cache, dalvik, etc
Install PureGv2
I forget the error off the top of my head but it doesn't install
In a nutshell I'm asking what am I doing wrong? Do I need to flash another kernel?
Flash your verizon kernel. Correct. I know it is a vzn rom, but do it anyway.
TheAxman said:
Flash your verizon kernel. Correct. I know it is a vzn rom, but do it anyway.
Click to expand...
Click to collapse
Was looking through Tomsgt's Youtube channel and stumbled across a video of his that showed his "About Phone". Everything was identical to mine, so I'm still a little lost as to why I can flash certain ROMs but not others. Sac/Gru's ROM soft bricked my phone, Hyperdrive5.7 didn't install, CleanROM does. It's just funky...maybe I'll just Odin back to stock, flash the MDK and start fresh.
Could the downloads be a problem? I downloaded 2 of the ROMs from work today on a 50meg pipe and they didn't work.
Do you download the ROMs to your phone or to your computer and then move them to your SD card?
If you download to your phone, do you move them to the SD card or leave them in the download folder on the internal storage?
If you do the latter, do you use a micro SD adapter or plug the phone in and move them that way?
harrytery said:
Was looking through Tomsgt's Youtube channel and stumbled across a video of his that showed his "About Phone". Everything was identical to mine, so I'm still a little lost as to why I can flash certain ROMs but not others. Sac/Gru's ROM soft bricked my phone, Hyperdrive5.7 didn't install, CleanROM does. It's just funky...maybe I'll just Odin back to stock, flash the MDK and start fresh.
Could the downloads be a problem? I downloaded 2 of the ROMs from work today on a 50meg pipe and they didn't work.
Do you download the ROMs to your phone or to your computer and then move them to your SD card?
If you download to your phone, do you move them to the SD card or leave them in the download folder on the internal storage?
If you do the latter, do you use a micro SD adapter or plug the phone in and move them that way?
Click to expand...
Click to collapse
Download to the computer,then copy to the phones extsdcard, should be ok, make sure you do a md5 check on the files to make sure they are the correct size.
TheAxman said:
Download to the computer,then copy to the phones extsdcard, should be ok, make sure you do a md5 check on the files to make sure they are the correct size.
Click to expand...
Click to collapse
Alright sounds good. Flashing back to stock later today then re-rooting
thanks for the help
Remember always do a BACKUP before you do anything.
First off, big thanks for this thread.
Now I'm running Cleanrom 1.5. If I wanted to install a new rom can someone please explain exactly what I do to go about it? As jargon free as possible would be awesome.
Sent from my SCH-I545
I certainly scared the carp outta me the other night. I'm using the Carbon ROM and while I do like it, I miss a couple of the S4s features. I picked what looked like a good modified stock ROM and proceeded to flash it.
I'm using Goo and TWRP for the job. I checked of all 3 boxes for clearing cache, davik and factory reset.
Then I chose the file and started it.
The first result, it acted like if was doing everything but nothing changed. Phone still worked fine.
On the next try, I waited for TWERP to start and I reselected the ROM I wanted and flashed it.
When it booted up, I was very happy to see the original screens come up. Then it stopped on the one with the Verizon check mark. The blue LED slowly pulsing and nothing else for about 30 min. I removed battery to try and start over. Same thing again.
Time to goto my backup and restore my phone back to Carbon.
IT FAILED.
Now my phone is stuck in a weird looking boot up loop. After a few tries I was able to get into recovery
mode. TWRP started loading, froze and crashed! Even though I am a total noob at this, I still did not panic.
I'd restart my phone by removing the battery, going into recovery mode and then wildly press every button on my phone hoping to break the loop. It worked! I chose a different save and tried it all over again. FAIL.
ON the next I wiped every bit of old data off. Chose Factory restore crossed my fiingers....it work! My phone is fine now.
Thanks to that ordeal and this thread I think I know what I did wrong even though this never happened to me. before.
1) WIPE THE DATA
2)INSTALL A COMPATABLE KERNAL FIRST
V^^^^V
Vampyre111 said:
I certainly scared the carp outta me the other night. I'm using the Carbon ROM and while I do like it, I miss a couple of the S4s features. I picked what looked like a good modified stock ROM and proceeded to flash it.
I'm using Goo and TWRP for the job. I checked of all 3 boxes for clearing cache, davik and factory reset.
Then I chose the file and started it.
The first result, it acted like if was doing everything but nothing changed. Phone still worked fine.
On the next try, I waited for TWERP to start and I reselected the ROM I wanted and flashed it.
When it booted up, I was very happy to see the original screens come up. Then it stopped on the one with the Verizon check mark. The blue LED slowly pulsing and nothing else for about 30 min. I removed battery to try and start over. Same thing again.
Time to goto my backup and restore my phone back to Carbon.
IT FAILED.
Now my phone is stuck in a weird looking boot up loop. After a few tries I was able to get into recovery
mode. TWRP started loading, froze and crashed! Even though I am a total noob at this, I still did not panic.
I'd restart my phone by removing the battery, going into recovery mode and then wildly press every button on my phone hoping to break the loop. It worked! I chose a different save and tried it all over again. FAIL.
ON the next I wiped every bit of old data off. Chose Factory restore crossed my fiingers....it work! My phone is fine now.
Thanks to that ordeal and this thread I think I know what I did wrong even though this never happened to me. before.
1) WIPE THE DATA
2)INSTALL A COMPATABLE KERNAL FIRST
V^^^^V
Click to expand...
Click to collapse
I can not stress enough HOW IMPORTANT THE KERNEL IS!
Hmm so everyone is a now a Oriental Flash Master from the far East now huh?
What recovery is everyone using?
[updated: 07-12-2013]
Flashing Questions
So, if you just need to add something, like different Kernerl, do you have to wipe and start from scratch?
Should you.
If so, and you backup apps and data in Titanium, then what you do a full wipe, flash entire rom, and reinstall the apps and data associated therewith?
Last, I have asked this but cannot seem to get an answer.
Installed Hyperdrive 7 (also had 5.7 and 6). Rom is super smooth and fast, working like a charm. but I want Verizon Visual Voice Mail.
I tried to copy the apk file to the devices system/app directory but get permission denied message....tried to install, and get failed message....
xander45 said:
So, if you just need to add something, like different Kernerl, do you have to wipe and start from scratch?
Should you.
If so, and you backup apps and data in Titanium, then what you do a full wipe, flash entire rom, and reinstall the apps and data associated therewith?
Last, I have asked this but cannot seem to get an answer.
Installed Hyperdrive 7 (also had 5.7 and 6). Rom is super smooth and fast, working like a charm. but I want Verizon Visual Voice Mail.
I tried to copy the apk file to the devices system/app directory but get permission denied message....tried to install, and get failed message....
Click to expand...
Click to collapse
did you set the permissions for the app? That should work actually. Look at one of the apps in that directory, and set the permissions the same for the voice app. Reboot and see what happens.
Good luck.
May want to post this question also in my guide thread.
http://forum.xda-developers.com/showthread.php?t=2295557
Sorry if this is dumb, but how do I know what kernels for sure work with my device and how do I get them to my external sd card? I suppose the one that is currently on my device(how to get that to sd?), but what others?
Thanks.
Painterface said:
Sorry if this is dumb, but how do I know what kernels for sure work with my device and how do I get them to my external sd card? I suppose the one that is currently on my device(how to get that to sd?), but what others?
Thanks.
Click to expand...
Click to collapse
Please bring the question over to my thread up above. It shows also what kernels to use. We will help there.
Another noob question: so you still advise flashing a kernel even if the ROM creator says that the ROM comes with the appropriate kernel and that no extra flashing is required? I've got the Verizon Galaxy S4 variant and specifically am thinking of Dubbsy's Google Play Edition ROM.
Sent from my SCH-I545 using Tapatalk 2
theoneknownasbob said:
Another noob question: so you still advise flashing a kernel even if the ROM creator says that the ROM comes with the appropriate kernel and that no extra flashing is required? I've got the Verizon Galaxy S4 variant and specifically am thinking of Dubbsy's Google Play Edition ROM.
Sent from my SCH-I545 using Tapatalk 2
Click to expand...
Click to collapse
You would flash the rom, and after, flash your verizon kernel, simple as that.
Hello, thanks for taking a look.
My Eken a90 clone is now merely lighting the backlight of the display and not much else.
My unmodded device went into boot loop after I uninstalled an apk & I decided then was a good time to finally look into rooting it and installing custom firmware as the factory firmware is not available for download from the manufacturer. First I flashed cwm6028-a10-9part-v2.zip and I was able to boot into cwm. Then I flashed cm10_a10_20121011.zip and CM10 installed wonderfully and I was thrilled. Next I was supposed to flash gapps-jb-20121011-signed.zip but did not. I had confused myself and mixed up my steps. Instead I flashed t02_compatibility_1.2.0.zip which may not have been the compatability zip I even needed. I did not realize my error until it was too late and now the device has no display and I cannot enter recovery. I can push files but I cannot flash to it. I have tried pushing the cwm & cm10 .zips to sdcard but this has had no effect I felt I should ask for help. Though I have used android devices for years, this is my first experience with custom firmware.
Rodchenko said:
Hello, thanks for taking a look.
My Eken a90 clone is now merely lighting the backlight of the display and not much else.
My unmodded device went into boot loop after I uninstalled an apk & I decided then was a good time to finally look into rooting it and installing custom firmware as the factory firmware is not available for download from the manufacturer. First I flashed cwm6028-a10-9part-v2.zip and I was able to boot into cwm. Then I flashed cm10_a10_20121011.zip and CM10 installed wonderfully and I was thrilled. Next I was supposed to flash gapps-jb-20121011-signed.zip but did not. I had confused myself and mixed up my steps. Instead I flashed t02_compatibility_1.2.0.zip which may not have been the compatability zip I even needed. I did not realize my error until it was too late and now the device has no display and I cannot enter recovery. I can push files but I cannot flash to it. I have tried pushing the cwm & cm10 .zips to sdcard but this has had no effect I felt I should ask for help. Though I have used android devices for years, this is my first experience with custom firmware.
Click to expand...
Click to collapse
hey dont worry this tablet its almos unbrikable you just need this program LiveSuitPack_v1.07 on your pc, and find the original rom from your tablet and flashed
spideyjab said:
hey dont worry this tablet its almos unbrikable you just need this program LiveSuitPack_v1.07 on your pc, and find the original rom from your tablet and flashed
Click to expand...
Click to collapse
Thanks for that. I downloaded and installed it, drivers and all. Now I'll be good to go if I can find a suitable factory img. I have access to a second unmodded tablet of the same model, perhaps I can get an img file from it somehow.
I have a Samsung Galaxy Tab S LTE (SM-T805). When I do "adb recovery" or when I do "power+vol up" it boots into a "revovery" which says
Android system recovery <3e>
LRX22G.T805XXU1B0D1
etc
I would like to know,
1) is this part of the original/stock Samsung firmware/software, or is it something that was downloaded on the tablet by the previous owner? (I bought the tablet second hand)
2) do I need to install another bootloader if I wanted to install another ROM or is this good enough?
3) could someone please tell me how to install another bootloader?
Many thanks
1) 3e is the stock recovery.
2) You should not need a new bootloader if you are using roms based on the same firmware - LRX22G or similar
a) If you need a new bootloader, it will be mentioned by the developer of the rom you are using.
3) I believe what you are actually looking for is a custom recovery - this is needed to install roms that are not signed directly by Samsung.
http://forum.xda-developers.com/galaxy-tab-s/development/root-cf-autoroot-twrp-t800-t3079488
thanks. Another couple of qiestions please:
1) I have installed TWRP and it works really nicely. Is there a way to go back to the "official" stock recovery? Where would I get it from?
2) I have also installed and tried different ROMs, like liquid-something, ice-something, ironman-somethhing. Does this mean that my tablet now "remembers" that it has been hacked somehow?
3) I forgot to backup the stock ROM, before I installed other custom ones. Where could I get the stock ROM from? I have looked for it but I cannot really get my hands on it.
Many thanks
Zilliman said:
thanks. Another couple of qiestions please:
1) I have installed TWRP and it works really nicely. Is there a way to go back to the "official" stock recovery? Where would I get it from?
2) I have also installed and tried different ROMs, like liquid-something, ice-something, ironman-somethhing. Does this mean that my tablet now "remembers" that it has been hacked somehow?
3) I forgot to backup the stock ROM, before I installed other custom ones. Where could I get the stock ROM from? I have looked for it but I cannot really get my hands on it.
Many thanks
Click to expand...
Click to collapse
1) Sometimes developers will provide a link to the stock recovery, but I did not see one when glancing around the forums. If you use the method mentioned in step 3, then you will be back on the stock recovery.
2) No. As long as you wipe /system, /data, /cache, and /dalvik cache then nothing important will be left from any previous rom flash. (Some roms will leave folders on your internal SD card that you can delete manually).
3) You'll find the stock rom here. This would need to be done in Download Mode with Odin. This will overwrite everything on the tablet and be like it was brand new. http://forum.xda-developers.com/galaxy-tab-s/general/samsung-lollipop-range-tab-s-t3021612
es0tericcha0s said:
1) Sometimes developers will provide a link to the stock recovery, but I did not see one when glancing around the forums. If you use the method mentioned in step 3, then you will be back on the stock recovery.
2) No. As long as you wipe /system, /data, /cache, and /dalvik cache then nothing important will be left from any previous rom flash. (Some roms will leave folders on your internal SD card that you can delete manually).
3) You'll find the stock rom here. This would need to be done in Download Mode with Odin. This will overwrite everything on the tablet and be like it was brand new. http://forum.xda-developers.com/galaxy-tab-s/general/samsung-lollipop-range-tab-s-t3021612
Click to expand...
Click to collapse
Again, many thanks.
The link you provided further directs you to some weird paid-for download sites, could not get anywhere with them. I would not mind paying say 10p for a one-off file download, but they want you to pay monthly etc, seriously...
However, for UK generic ROM, I got this file "SEE-T805XXU1BOD1-20150511102748.zip" which I got off some Russian or something web site, it was uploaded to Google Drive, so it was easy to download.
A serious issue I have discovered, and am not sure what the right steps are, is when installing TWRP, the installation seems not to "catch", so after the upload you still have the old bootloader. The way I got that to work was to uncheck the "reboot" flag in Odin, waited until the download was complete, and then after a while manually switched the phone off (I think it is menu+vol down+power) and then switched on again using menu+vol up+power and that got me into TWRP at last.
Anyway now it seems I am back to the stock ROM, and stock bootloader, and as you said, if I ever returned the tablet for a service they would not be able to tell that I had flashed other ROMs?