I've been searching and reading and haven't found a definitive, working method. I did find some reference to being able to do this via safestrap but then either sound doesn't work or wifi doesn't work. Is there a way to downgrade and have everything work? I'm aware it's likely a different boot loader so I'm sure just a straight downgrade via odin isn't happening...
I do not think you can downgrade to 4.3. You are stuck with nc5.
Related
So I have a friends TBolt here and its been upgraded to the newest 2.11.605.9 Gingerbread...
I've searched and searched and tried a number of methods with no luck on rooting this thing...anyone know of a way to do this?
Full Info
Android Verison
2.3.4
HTC
2.1
Software
2.11.605.9
PRI
1.41_002, 1.64_002
PRL
15098
ERI
5
Kernal
2.6.35.10-g89eb00a
baseband
1.48.00.0930w_3 0.01.78.0916w_3
I really hate to tell you this, as I was reluctant to do this as well, but you are going to have to downgrade the phone before you can use Revolutionary to get S-Off and attain root access(I'm doing it later tonight, after my phone is charged).
It's not as bad of a process as it seems, and you can back up almost everything on the phone. If set properly, the android market will start to restore your applications once you relink your accounts(data is not saved though, and there is no easy method of data extraction aside from ADB) however, anything on the SD card(outside of system files) will remain.
This guide will contain all you need to know to downgrade.
Then just follow any tutorial that explains how to use Revolutionary.io with the Thunderbolt, but you should be able to figure it out on your own, it's really simple.
EDIT:
I myself have just gone through the process and can confirm that rooting this device is very simple. I have downgraded, attained S-Off, flashed Clockwork Mod, and a custom rom. I am very pleased with how simple the overall process was. The part that took the longest was downloading the downgrade files, the rest was very quick.
It is a simple process to downgrade and root. Just follow the instructions at Revolutionary.io.
I am having some problems with my gps working right so maybe tomorrow I will restore to the downgrade and and see if that works.
Once you downgrade your phone it will try to upgrade so be prepared to postpone it.
yea i recently rooted my phone but unfortunately you will have to downgrade the firmware in order to rooted so you can use the S-off otherwise you cant root it with the current firmware yet.
I rooted my Thunderbolt this weekend without downgrading the firmware using Revolutionary. You first have to do some preliminary steps first.
I'd provide a link to the post on Android Forums but I don't have enough posts yet.
It's the first result I get when I search for "thunderbolt root" with Google.
Greetings
I foolishly upgraded my tablet to the latest version (4.2.2) before rooting my device. I understand that 4.2.2 cannot be rooted at this time. If I am wrong, please let me know.
So....I downloaded EMMA, unlocked my tablet, installed EMMA and proceeded to (as I though) downgrade to 4.1.2, in order to root the tablet and then upgrade.
EMMA happily installed the downgrade and indicated it was successful. Upon restarting my tablet, I noticed that I still had 4.2.2. I tried to again install the downgrade, but no luck.
I did do a complete backup of my data, so after reinstalling my apps, I was able to restore data and get my tablet back to its original (4.2.2) state. Of course, I am sitting with an unlocked device. I did not see any way on EMMA to relock the bootloader.
Without overly trying the patience of those who have far more knowledge of these matters than I, here are a few questions:
-why didn't the downgrade take?
-given I have an unlocked device, is there an alternate method to downgrade, root, protect root, upgrade and relock device?
-if number 2 is not possible what is the easiest and quickest way to relock the bootloader.
-is rooting 4.2.2 a question of when or if?
I would like to thank you all for reading this and any help you have to offer.
Have a good day.
gderreck said:
Without overly trying the patience of those who have far more knowledge of these matters than I, here are a few questions:
-why didn't the downgrade take?
-given I have an unlocked device, is there an alternate method to downgrade, root, protect root, upgrade and relock device?
-if number 2 is not possible what is the easiest and quickest way to relock the bootloader.
-is rooting 4.2.2 a question of when or if?
I would like to thank you all for reading this and any help you have to offer.
Have a good day.
Click to expand...
Click to collapse
Emma does not downgrade. It only installs the latest ROM ("service") for your device. It wrongly shows you the previous version in the list of services available (.370 for example for my 311). If you view the ''service" details in the bottom of the right-hand panel in Emma, you will see it actually refers to the latest ROM, not the previous.
Also, as far as I know, you cannot re-lock your bootloader with Emma. You will have to use Flashtool - search these forums or Google it for a "how to". Why do you want to re-lock?
There is a way to get root on 4.2.2 if you have an unlocked bootloader, see here :
http://forum.xda-developers.com/showthread.php?t=2392092&page=24 , post #232. I have not tried this myself, so I can't say if it works.
A little tip for you - when asking a question here, please state your device version (311, 312 or 321).
gderreck said:
Greetings
I foolishly upgraded my tablet to the latest version (4.2.2) before rooting my device. I understand that 4.2.2 cannot be rooted at this time. If I am wrong, please let me know.
So....I downloaded EMMA, unlocked my tablet, installed EMMA and proceeded to (as I though) downgrade to 4.1.2, in order to root the tablet and then upgrade.
EMMA happily installed the downgrade and indicated it was successful. Upon restarting my tablet, I noticed that I still had 4.2.2. I tried to again install the downgrade, but no luck.
I did do a complete backup of my data, so after reinstalling my apps, I was able to restore data and get my tablet back to its original (4.2.2) state. Of course, I am sitting with an unlocked device. I did not see any way on EMMA to relock the bootloader.
Without overly trying the patience of those who have far more knowledge of these matters than I, here are a few questions:
-why didn't the downgrade take?
-given I have an unlocked device, is there an alternate method to downgrade, root, protect root, upgrade and relock device?
-if number 2 is not possible what is the easiest and quickest way to relock the bootloader.
-is rooting 4.2.2 a question of when or if?
I would like to thank you all for reading this and any help you have to offer.
Have a good day.
Click to expand...
Click to collapse
Have a look here for downgrade instructions:
http://forum.xda-developers.com/showthread.php?t=2427256
I've done it yesterday and am glad i got rid of that dreadful phablet UI.
Thank you both for your replies. Mode is SGP311. I bought it from Sony Canada. I'm not sure if that is significant. Would I be correct in guessing that the US firmware is different from the Canadian version?
Thanks
gderreck said:
Thank you both for your replies. Mode is SGP311. I bought it from Sony Canada. I'm not sure if that is significant. Would I be correct in guessing that the US firmware is different from the Canadian version?
Thanks
Click to expand...
Click to collapse
Take a look here:
"http://forum.xda-developers.com/showthread.php?t=2433466"
Given that you have a SGP311, you should be able to root stock 4.2.2 using this.
Want some Views of YOu All . Currently i am on MJ7 Bootloader and 4.3 firnware version and thinking of getting an update to NC5 With Bootloader . What you guys think Or should i wait for some Miracle .?? Dont tell me to upgrade without bootloader because there is an annoying Bug where i cant charge my phone in power off(IT turns on automatically) because off bootloader and firmware incompatibility. Thanx.
You just need to upgrade your bootloader to mk2 to get rid of the bug. That's a problem with mj7, which is why mk2 came out so quick after. You can even downgrade the mk2 bootloader back to mj7. But between staying on mk2 bootloader or moving on to nc5, I would move on. Theoretically something COULD happen but you won't find anyone on the net who is still working on unlocking that firmware.
joshm.1219 said:
You just need to upgrade your bootloader to mk2 to get rid of the bug. That's a problem with mj7, which is why mk2 came out so quick after. You can even downgrade the mk2 bootloader back to mj7. But between staying on mk2 bootloader or moving on to nc5, I would move on. Theoretically something COULD happen but you won't find anyone on the net who is still working on unlocking that firmware.
Click to expand...
Click to collapse
Thanx . Gonna try it.
I'm looking to update my mom's phone, I honestly don't remember what I did to it in the past. As far as I can tell it's rooted on NC5, with a lock boot loader (I assume although when booting up I see an unlocked lock with the words "custom" underneath it) and knox is 0x0. Does that mean my bootloader is actually unlocked? and am I following this guide (http://forum.xda-developers.com/gal...-to-root-i545vrufnk1-4-4-2-12-1-2014-t2959613) to update to the latest version?
Thanks
You are most likely rooted but for sure your bootloader is still locked. As far as updating, if you don't want to keep root or anything then just odin back to stock and accept an OTA. If you want root then there are other ways to update posted in this forum.
So I decided to try out the new root that was found. Restored my phone to stock ZV8 then ran the one click. Flashed the Twrp recovery(didn't fail when flashing), and rebooted. Comes up with Secure boot error. So just saying out there that recovery does not work with the new root method.
I wonder if it's related to the bumping process, and that we don't have a truly unlocked bootloader.
That's what I was originally thinking but then I remembered that zv8 uses a newer bootloader than ZV4. So we need . Updated version of TWRP to work with the bootloader.
That's what I was originally thinking but then I remembered that zv8 uses a newer bootloader than ZV4. So we need . Updated version of TWRP to work with the bootloader.
New root method only allows root at ROM level. LG closed the boot loader security flaw in zv8. U have to go back to zv4, stump the ROM then bump for custom recovery.
Fixed
Heres a solution to your problem... http://forum.xda-developers.com/spr...y-download-t3053985/post60106965#post60106965