[Q] Which bootloader? - Android Q&A, Help & Troubleshooting

I've unlocked my Transformer Prime TF201 with the asus tool.
I would like to get root on it.
I guess the next step is to install twrp.
When I check the twrp site
they have 2 methods depending on the bootloader version (ICS or JB).
How can I know which bootloader is installed on my TF201?
Thanks in advance!

velle frak said:
I've unlocked my Transformer Prime TF201 with the asus tool.
I would like to get root on it.
I guess the next step is to install twrp.
When I check the twrp site
they have 2 methods depending on the bootloader version (ICS or JB).
How can I know which bootloader is installed on my TF201?
Thanks in advance!
Click to expand...
Click to collapse
well if you are running ICS (ice cream sandwich or android 4.0.x) it would be the ICS one it would be JB if you are running JB (jelly bean or 4.1.x probably in your case)

Thank you very much for your answer.
blu422 said:
well if you are running ICS (ice cream sandwich or android 4.0.x) it would be the ICS one it would be JB if you are running JB (jelly bean or 4.1.x probably in your case)
Click to expand...
Click to collapse
Seems logical, but what confuses me is that while the unlock was successfull the asus unlock tool says
"Unlock Device App: Unlock boot loader(Only works with TF201 ICS OS)
Notice:
1. Only suitable for Andriod4.0 Ice Cream Sandwich OS version."
while I'm on JB (the 4.1.x version) if I check the settings.
Is their any danger in trying the twrp JB version while there is a very slim change I'm on ICS bootloader?
Also, a backup while on JB isn't possible according to the twrp site.
I would hate to brick my device without having a backup .

Related

Need Help To Root Asus Transformer TF101 9.2.1.27

Hey i need help to root my asus transformer android (version 4.0.3 and build number ww epad 9.2.1.27 ) my tablet is not rooted yet and have ice cream sandwich installed on it...i did read some forum but the only thing i found is i have to downgrade my version to be able to comeback with ice cream sandwich rooted .. is there a simple method that i could do to root my tablet with windows or micro sd card
+1
tony6699 said:
Hey i need help to root my asus transformer android (version 4.0.3 and build number ww epad 9.2.1.27 ) my tablet is not rooted yet and have ice cream sandwich installed on it...i did read some forum but the only thing i found is i have to downgrade my version to be able to comeback with ice cream sandwich rooted .. is there a simple method that i could do to root my tablet with windows or micro sd card
Click to expand...
Click to collapse
As I see - in the inernet while there is no information.
http://forum.xda-developers.com/showthread.php?t=1689193
People mentioned having success with that tool at 9.2.1.27 on page 24.
ErichMoraga said:
http://forum.xda-developers.com/showthread.php?t=1689193
People mentioned having success with that tool at 9.2.1.27 on page 24.
Click to expand...
Click to collapse
Can confirm that this rooted my B70 TF101 without issue. Thanks for the link!

Unlock bootloader on official 4.1?

In the download description at http://www.asus.com/Eee/Eee_Pad/Eee_Pad_Transformer_Prime_TF201/#download it states:
1. Only suitable for Andriod4.0 Ice Cream Sandwich OS version. (not responsible for misspelling lol)
Has anyone tried the unlock tool while on the latest jellybean update?
hauj0bb said:
In the download description at http://www.asus.com/Eee/Eee_Pad/Eee_Pad_Transformer_Prime_TF201/#download it states:
1. Only suitable for Andriod4.0 Ice Cream Sandwich OS version. (not responsible for misspelling lol)
Has anyone tried the unlock tool while on the latest jellybean update?
Click to expand...
Click to collapse
I did but i dont think fastboot is working properly

no jelly bean update

hi i just got my asus tf700t n it asked me to update software straight away but it was to 4.0.3 not the knew jelly bean.........why is this?
asustf700t said:
hi i just got my asus tf700t n it asked me to update software straight away but it was to 4.0.3 not the knew jelly bean.........why is this?
Click to expand...
Click to collapse
Most devices require that you install every update from where you are, to the last update. Meaning if you are on Android 4.0.1 and ASUS released a 4.0.3 (ICS), 4.0.4 (ICS) and finally a 4.1.1 update you will have to install all three.

[Q] Downgrade from stock JB to stock ICS on TF201

This on behalf of a coworker, who's developing an app for the TF201.
He accidentally did an OTA upgrade to JB. Unfortunately, the client's acceptance testing is only for ICS (please don't ask, and please don't say the app should be made to work with JB), and he needs to downgrade the Transformer back to ICS.
The device has not been unlocked and has not been rooted. It was stock ICS before the upgrade and is currently stock JB.
I don't have much experience with the Transformer, though I've mucked around with alternative ROMs for my B&N Nook Color and my Galaxy S.
Do we need to do the following?
1. Unlock the bootloader (using the V6 unlock tool from Asus, even though it's labeled as being for ICS)
2. Install ClockworkMod
3. Use CWM to install the ICS binary images that we get from Asus
On one of the threads discussing a JB to ICS downgrade, someone noted that there's no way to revert the JB bootloader to the ICS one. If that's the case, what are the implications of that?
Thanks.
chengjih said:
This on behalf of a coworker, who's developing an app for the TF201.
He accidentally did an OTA upgrade to JB. Unfortunately, the client's acceptance testing is only for ICS (please don't ask, and please don't say the app should be made to work with JB), and he needs to downgrade the Transformer back to ICS.
The device has not been unlocked and has not been rooted. It was stock ICS before the upgrade and is currently stock JB.
I don't have much experience with the Transformer, though I've mucked around with alternative ROMs for my B&N Nook Color and my Galaxy S.
Do we need to do the following?
1. Unlock the bootloader (using the V6 unlock tool from Asus, even though it's labeled as being for ICS)
2. Install ClockworkMod
3. Use CWM to install the ICS binary images that we get from Asus
On one of the threads discussing a JB to ICS downgrade, someone noted that there's no way to revert the JB bootloader to the ICS one. If that's the case, what are the implications of that?
Thanks.
Click to expand...
Click to collapse
Unless you did the nvflash process before going up to Jellybean (which you haven't because you are not even unlocked) then you cannot go back to ICS. Do not even attempt it you will brick the tablet.

[Q] Returning to stock/Changig ROM

Hi!
I'm a happy user of the ATP since this summer. When I buy it, it comes with ICS (Android 4.0), and when Android 4.1 was released, I didn't wait to an official upgrade: I follow the instructions and unlocked with the official ASUS application and then installed CWM 5.8.2.0 and a CyanogenMod 10 nightly.
Now, I want to move forward, but I read some thing about different bootloaders and I prefer to be more careful than I usually am.
First, I don't if I can return to an official ASUS ROM with my actual configuration (unknown bootloader, CWM 5.8.2.0 andCM10 nightly).
Second, I don't know if there is an thread about the official ROMs (I was unable to find any).
Third, I don't know if the latest ASUS ROMs are Android 4.2.1, 4.2 or 4.1.
[cry mode]In addtion, trying to look my bootloader version I made a mess and wipe my user data, so this is the perfect momentum to move backward/forward and put my ATP in the "right way".[/cry]
Thanks in advance and best regards
Ok, I just have found a thread about the official updates and it looks like ASUS is still on 4.1 (not bad!).
So, One of my questions is answered
I hope that when you say "unlocked" you mean after getting nvflash access:
http://androidroot.mobi/2012/07/15/nvflash-for-tegra3-transformer-prime/
http://androidroot.mobi/t3_nvflash/
(will save you from bricking)
Generally, you have the ICS bootloader and the JB bootloader. Most roms now require the JB bootloader, so if you're looking to flash new roms, especially something like craigmcgomez's unofficial AOKP/CM roms (based on 4.2), you'll need the JB bootloader. I simply used this rom:
http://forum.xda-developers.com/showthread.php?t=1927494
This is the official worldwide ASUS update (there's also a US version in another thread, not sure if these are still the most up-to-date), but it's 4.1 (.2?), rooted and it comes with TWRP recovery (I prefer over CMW5), but most importantly, it comes with the new JB bootloader. I understand you won't be able to return to the ICS bootloader after you update to the JB bootloader, but I don't see a reason why you'll want to. Either way, you can flash this even if you're on the ICS bootloader (and if you're already on the JB bootloader).
After you flash this you can flash JB bootloader-compatible roms. I recommend AndroWook or AOKP. I'm on AndroWook, but I'm waiting for official CM10.1.
If I'm not mistaken, the CM10 nightlies work on the ICS bootloader, and 10.1 will officially support the JB bootloader only, so my guess is you're on the ICS bootloader. If you updated to stock 4.1.x or any rom that says it comes with the JB bootloader, then you know you've got the JB bootloader, otherwise you're probably on ICS bootloader.
Thanks WiW for your answer.
I don't know if I have unlocked the Nvflash...
I refer to using the Asus tool for being able to enter to the bootloader/recovery (when the message "This device is unlocked"appears on the top left corner when the Nvidia logo is on the screen.
I will check all your links now. A lot of thanks for you time!
Sent from my GT-I9100 using Tapatalk 2
Now reading your two first links I'm pretty sure that I didn't unlock my NVflash. I only unlocked my bootloader for being able to flash a recovery, just that.
Sent from my GT-I9100 using Tapatalk 2
Well, if you're not sure you can follow this guide and see if it works for you. If you did not follow the steps from the previous links I posted, I think there isn't much you can do about it...
Sorry for the misunderstanding. I was able and I successfully unlocked and backup my files with NVflash.
I installed the official Asus ROM and the JB bootloader and TWP Recovery.
After that I've installed the Androwook, as you suggested. It works fine, but I expected 4.2... my fault, I didn't read the entire AndroWook post.
A lot of thanks WiW
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