[Q] updating to 4.2 bootloader? - Transformer TF300T Q&A, Help & Troubleshooting

To update to 4.2 bootloader, would i just do a factory reset and then flash the Asus stock firmware? I'm on 4.1 right now

Correct. I just updated mines a few days ago,worked perfect. Also,you might want to install a 4.2 recovery to go with that.
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Related

OTA updates?

If your tablet is rooted and unlocked can you still get OTA updates from Asus?
nope. sorry
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Aw OK. So now I have to find a good rom..
U can always download stock rom (update) zip from asus website and flash it using recovery or wolfs method. But u will lose everything ;(
Sent using tf300t - stock rom/kernel (rooted)

has anyone rooted jellybean or downgraded to ics

Has any one been able to root Jellybean yet, or downgrade back to Ice Cream Sandwich for the transformer prime tf300. Ive tried the firmware update to the .17 for ics and its still locked to Jellybean. The only other thing i could think of is to use the kernals, but i found no way to install them. Should i even try unlocking the bootloader?
So far, it looks hopeless to try and downgrade to ICS. The source code has been released so we may have root in the not-to-distant future once the developers have a look at it.
jdk2 said:
So far, it looks hopeless to try and downgrade to ICS. The source code has been released so we may have root in the not-to-distant future once the developers have a look at it.
Click to expand...
Click to collapse
Here's hoping. I didn't realize how much I really used until it was taken away.
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Why do you want to downgrade?
Sent from my SGH-T989 using xda app-developers app
seshaz said:
Why do you want to downgrade?
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Click to expand...
Click to collapse
If you can downgrade to ICS you could potentially get root back using the debugfs method. Then you can upgrade again and rescue your root with voodoo ota root keeper, but I had to wipe data after the jb upgrade, and that broke root for good, for now.
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funnel71 said:
If you can downgrade to ICS you could potentially get root back using the debugfs method. Then you can upgrade again and rescue your root with voodoo ota root keeper, but I had to wipe data after the jb upgrade, and that broke root for good, for now.
Sent from my ASUS Transformer Pad TF300T using xda app-developers app
Click to expand...
Click to collapse
Oh I see, you're bl is locked.
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heero117 said:
Has any one been able to root Jellybean yet, or downgrade back to Ice Cream Sandwich for the transformer prime tf300. Ive tried the firmware update to the .17 for ics and its still locked to Jellybean. The only other thing i could think of is to use the kernals, but i found no way to install them. Should i even try unlocking the bootloader?
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Rooting is very simple in JellyBean assuming you have your boot unlocked
moisaal said:
Rooting is very simple in JellyBean assuming you have your boot unlocked
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The ASUS site says:
1. Only suitable for Andriod4.0 Ice Cream Sandwich OS version.
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So if I got the 4.1 update, I cant unlock bootloader, and cant get root?
RenderOne said:
The ASUS site says:
So if I got the 4.1 update, I cant unlock bootloader, and cant get root?
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Click to collapse
You should be able to. Despite the message, many others are reporting success.
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Yes, you can root JB.
I just bought my Tab, upgraded to JB right away then performed below steps:
1) Used the ASUS unlocker to unlock the device, make sure you have internet connection otherwise it will not work.
2) Follow 3rd part in below thread to root JB:
http://forum.xda-developers.com/showthread.php?t=1845377
sghi777 said:
Yes, you can root JB.
I just bought my Tab, upgraded to JB right away then performed below steps:
1) Used the ASUS unlocker to unlock the device, make sure you have internet connection otherwise it will not work.
2) Follow 3rd part in below thread to root JB:
http://forum.xda-developers.com/showthread.php?t=1845377
Click to expand...
Click to collapse
Question, is that all you did? I'm considering doing the same but I don't want custom Roms and such. I just want my root back.
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I think the big question is if its possible to keep the BL locked though. I know I tried via the OTA keeper, and no success. Tried updating binaries, superSU, regular SU... no dice so far...
Sent from my SAMSUNG-SGH-T989 using xda premium
i want to downgrade my tf300t from jb to ics too,because i often watch some online videos with flash,but the jb doesn't support it.that's so bad.can anybody tell me how?
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jijitax4 said:
i want to downgrade my tf300t from jb to ics too,because i often watch some online videos with flash,but the jb doesn't support it.that's so bad.can anybody tell me how?
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Click to expand...
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Jb supports flash. Not officially.
Sent from my SAMSUNG-SGH-T989 using xda premium
For locked u can only root ics and keep it using voodoo rootkeeper and than update. Thats how i did it.
Im not sure but u could downgrade using this method. It flash whole system again and clear all ~30gb of memory so it should work.
Sent using tf300t - stock JellyBean (rooted)
thnx,but i have no courage to downgrade it by this thread.did anyone downgrade the JB to ICS sucessful?
1.a jb OS tf300t(upgrade by OTA)
2.unlocked
3.downgrade to ICS
can it be done?
i am a chinese.i used to see the Starcraft2 video at a online video site(www.youku.com,a website built by CHINA)i can watch the video without problem on ICS.but now when upgrade to JB.the video will sure stop at the beginning or after a few minutes and the browser will crashed. i tried several browser.no one worked.i am so depressed
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If ure unlocked u can dl .30 ics from asus and flash it in recovery i think
Sent using tf300t - stock JellyBean (rooted)
funnel71 said:
Question, is that all you did? I'm considering doing the same but I don't want custom Roms and such. I just want my root back.
Sent from my ASUS Transformer Pad TF300T using xda app-developers app
Click to expand...
Click to collapse
Yes, that's all I did.
gunshy
Why am I still gunshy then?
Just a heads up, if ota rootkeeprr couldn't restore root... reboot your tab. I did and all of a sudden I had proper root access
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Revert to Stock

How do I completely revert back to stock? I have tf300t on JB now.
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not sure waht your after mate to get back to stock just download the firmware from asus extract it once and put on the root of your tablet, then boot into recovery and wipe it the flash the stock firmware.
What's the method to get to recovery? I haven't installed cw yet but it should have stock recovery, right?
Sent from my SCH-I535 using xda app-developers app
Yep it will have stock recovery mate, but for custom recovery you need to unlock your bootloader mate
Sent from my ASUS Transformer Pad TF300T using Tapatalk 2
robgee789 said:
Yep it will have stock recovery mate, but for custom recovery you need to unlock your bootloader mate
Sent from my ASUS Transformer Pad TF300T using Tapatalk 2
Click to expand...
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is there an app that will flash custom recovery for me? my graphics crd is shot so the screen glitchrs on and off and i need to revert to stock to rma it. also could you link me to the stock recovery as its hard for me to use my tablet adn search around for it.
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Ics to JB

I have the bootloader unlocked rooted and have hydro ICS. If I want to move to JB and I just flash a JB rom? Or do I need to change to a different recovery? I understand that I can't go back to ics unless I do the nvflash back up. Also what JB rom has flash working?
Thank you
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swaser18t said:
I have the bootloader unlocked rooted and have hydro ICS. If I want to move to JB and I just flash a JB rom? Or do I need to change to a different recovery? I understand that I can't go back to ics unless I do the nvflash back up. Also what JB rom has flash working?
Thank you
Sent from my ASUS Transformer Pad TF300T using XDA Premium HD app
Click to expand...
Click to collapse
Which recovery have you ?
Have you read the different posts about your question ?
[DEV][TOOL][BRICKPROOF]TF300 NVFlash release!
[RECOVERY][TF300T/TG] TWRP 2.2.2 with on-screen keyboard + external sd! [2012-08-24]
[CWM][6.0.1.3 / 5.5.0.4] Official CWM Recovery for JB/ICS + ROOT
[GUIDE]Upgrade your TF300t to Jellybean, recovery, root & remove bloatware[Noobproof]
and all JB roms works well after it's personnal use.
twrp
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How Do I Return My TF300T Fresh Out The Box Stock

I Rooted My TF300T But Its Running Very Slow & In Want Get It Get Stock As If I Just Bought It ... How Do I Do It ?
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mcflyy_ said:
I Rooted My TF300T But Its Running Very Slow & In Want Get It Get Stock As If I Just Bought It ... How Do I Do It ?
Sent from my TF300T using xda app-developers app
Click to expand...
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This right here will return your TF300T to stock settings, just download the TF300T version instead. NOT THE TF300TG VERSION!
Your bootloader will stay unlocked because you can NOT re-lock it. This will uninstall root and return you to stock settings.
http://forum.xda-developers.com/showthread.php?t=1757077

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