[Q] How to upgrade bootloader to 10.26.1.18 ?

[usoska]

Hi,

I bought today a 701T ww, with bootloader version 10.26.1.7.

I've been able to unlock the bootloader, root the rom, and install a custom CWM (now 6.0.4.6).

I installed the custom rom CROMi-X 6.0b2

But I'm now unable to upgrade the bootloader to 10.26.1.18.

I reverted to stock 10.27.1.7 rom thanks to the nandroid backup I made prior CROM install, I've tried downloading the official update package from Asus, which is supposed to be the only way to upgrade the bootloader. I've put the UL-K00C-WW-10.26.1.18-user.zip file on the root of a MicroSD, the tablet recognized the update file, and rebooted to install it. Problem is that, after reboot, the tablet enters in the CWM with the following error :

Off course if I try "Yes - install untrusted.zip" it doesn't rework, and the tablet reboots ....

many thanks if you can help !

 

[berndblb]

Turn off "signature verification" in CWM and try again

BTW: How did you miss this??????

TF701T USERS: YOU MUST BE UNLOCKED, ON THE ASUS STOCK JB 4.3 BOOTLOADER VERSION 10.26.1.18 AND HAVE A WORKING RECOVERY - CWM 6.0.4.6+ BEFORE FLASHING THIS ROM. SEE UPGRADE INSTRUCTIONS BELOW IF YOU ARE UNSURE[/SIZE]

 

[usoska]

Turn off "signature verification" in CWM and try again

BTW: How did you miss this??????

TF701T USERS: YOU MUST BE UNLOCKED, ON THE ASUS STOCK JB 4.3 BOOTLOADER VERSION 10.26.1.18 AND HAVE A WORKING RECOVERY - CWM 6.0.4.6+ BEFORE FLASHING THIS ROM. SEE UPGRADE INSTRUCTIONS BELOW IF YOU ARE UNSURE[/SIZE]

Hi Berndblb, thanks for your reply.

Toggling the signature verification didn't help, I've already tried that.

I didn't miss this, but as I've never been able to upgrade the bootloader thanks to the official update, I thought that with CROMI the bootloader would be upgraded too. I noticed that was'nt the case, that's why I restored my nandroid backup to revert to the stock 10.26.1.7.

Now I'm in 10.26.1.7, and precisely want to upgrade the bootloader to be able to install CROMI with the correct bootloader. Therefore my question.

Would a "fastboot flash boot boot.img" using the boot.img file included in the official asus 10.28.1.18 package be a good idea ?

 

[usoska]

Okay, I finally solved it ... Here's what I did :

I downloaded the stock recovery from this url : http://droidbasement.com/db-blog/?p=3210

I booted on this recovery (fastboot boot recovery.img), and the upgrade could be completed.

I'm now under stock 10.26.1.18, with corresponding bootloader :good:

 

[Calp]

Okay, I finally solved it ... Here's what I did :

I downloaded the stock recovery from this url : http://droidbasement.com/db-blog/?p=3210

I booted on this recovery (fastboot boot recovery.img), and the upgrade could be completed.

I'm now under stock 10.26.1.18, with corresponding bootloader :good:

Hey man! Thanks for the explanation. I seem to have a similar problem as you had and tried to use your steps to fix it.
However, when I boot into the stock recovery the green android figure appears and falls on the back (with exclamation mark) after about 2 seconds... Is there something else to take care of, any ideas what I might have missed?

 

[berndblb]

Hey man! Thanks for the explanation. I seem to have a similar problem as you had and tried to use your steps to fix it.
However, when I boot into the stock recovery the green android figure appears and falls on the back (with exclamation mark) after about 2 seconds... Is there something else to take care of, any ideas what I might have missed?

That is great news! The Android on his back is the stock recovery not finding a valid update file.
Download the .18 firmware again (remember - you edited the update script) and you should be good to go

 

[Calp]

That is great news! The Android on his back is the stock recovery not finding a valid update file.
Download the .18 firmware again (remember - you edited the update script) and you should be good to go

Wow! I hope you're right.
Will I need the original WW_epaduser_10_26_1_18_UpdateLauncher.zip or the once unzipped UL-K00C-WW-10.26.1.18-user.zip - and what about the WW_10_26_1_18_SDupdate.zip? Where do I have to place them, on internal storage or fat32 formatted microsd card? Thanks in advance!

 

[berndblb]

Wow! I hope you're right.
Will I need the original WW_epaduser_10_26_1_18_UpdateLauncher.zip or the once unzipped UL-K00C-WW-10.26.1.18-user.zip - and what about the WW_10_26_1_18_SDupdate.zip? Where do I have to place them, on internal storage or fat32 formatted microsd card? Thanks in advance!

Copy the xxx.18-user.zip to the root of your internal, meaning not into any folder, just into /sdcard.
A notification to upgrade should pop up. If not, reboot.
The SDupdate.zip is only available for the WW version and I suspect Asus provided it because a few weeks back they pushed a bad update to WW users, causing their tablets to hang in boot. I suspect it's specifically meant to be used to update from the microSD in your recovery (if you cannot boot system), but that's just a guess.
So if method one doesn't work, copy the SDupdate file to a microSD, boot into stock recovery and it should recognize the file and flash it.

 

[Calp]

Copy the xxx.18-user.zip to the root of your internal, meaning not into any folder, just into /sdcard.
A notification to upgrade should pop up. If not, reboot.
The SDupdate.zip is only available for the WW version and I suspect Asus provided it because a few weeks back they pushed a bad update to WW users, causing their tablets to hang in boot. I suspect it's specifically meant to be used to update from the microSD in your recovery (if you cannot boot system), but that's just a guess.
So if method one doesn't work, copy the SDupdate file to a microSD, boot into stock recovery and it should recognize the file and flash it.

It did indeed start installing the update just as you said it but after 30 % or so an error errupted and the android guy fell over again. I booted the tablet and received "error no 12 - the update package is not compatible with your current software. please check your software version and number in the settings and use the right update package."
I did use the UL-K00C-WW-10.26.1.18-user.zip which is for WW SKU, and the build number in the settings says:
JSS15J.WW-epad-10.26.1.7-20131108

The method with SDUpdate file doesn't work either. It doesn't recognize it in the bootloader (as explained in the official info document from asus) and when I boot into recovery manually the installation fails after a second or so.

I'm really sorry for bothering that much, but do you know what's my fault?

Update: I just kept on trying and with the fourth try it did work! It did update to .v18, now the build number in settings AND the bootloader confirms it. THANK YOU SO MUCH, everyone @ berndblb, usoska, super0dd, Sleepy2 and sbdags! I'm in your all's debt.

So I will now flash
- this recovery : http://droidbasement.com/db-blog/?p=3223
Once this is done,
- I finally flash the CROMi-X ROM with the just installed CWM 6.0.4.6

Is that correct or did I miss anything?

I am so thankful, guys!

 

[usoska]

THANK YOU SO MUCH, everyone @ berndblb, usoska, super0dd, Sleepy2 and sbdags! I'm in your all's debt.

So I will now flash
- this recovery : http://droidbasement.com/db-blog/?p=3223
Once this is done,
- I finally flash the CROMi-X ROM with the just installed CWM 6.0.4.6

Is that correct or did I miss anything?

I am so thankful, guys!

You're very welcome !

That looks correct.

 

[Sleeepy2]

It did indeed start installing the update just as you said it but after 30 % or so an error errupted and the android guy fell over again. I booted the tablet and received "error no 12 - the update package is not compatible with your current software. please check your software version and number in the settings and use the right update package."
I did use the UL-K00C-WW-10.26.1.18-user.zip which is for WW SKU, and the build number in the settings says:
JSS15J.WW-epad-10.26.1.7-20131108

The method with SDUpdate file doesn't work either. It doesn't recognize it in the bootloader (as explained in the official info document from asus) and when I boot into recovery manually the installation fails after a second or so.

I'm really sorry for bothering that much, but do you know what's my fault?

Update: I just kept on trying and with the fourth try it did work! It did update to .v18, now the build number in settings AND the bootloader confirms it. THANK YOU SO MUCH, everyone @ berndblb, usoska, super0dd, Sleepy2 and sbdags! I'm in your all's debt.

So I will now flash
- this recovery : http://droidbasement.com/db-blog/?p=3223
Once this is done,
- I finally flash the CROMi-X ROM with the just installed CWM 6.0.4.6

Is that correct or did I miss anything?

I am so thankful, guys!

WooHoo! excelent. Glad you got everything all sorted out.

 

[sbdags]

Guys I've tried for 2 days to make a flashable zip to flash the latest bootloader and recovery but the tools asus provided only appear to work with the stock recovery. CWM currently does not support this method and I'm giving up at the risk of bricking.

So the method for now is the one posted above:

Fastboot flash the asus stock recovery.img and then update to the latest firmware then fastboot flash the latest CWM.

 

[Sleeepy2]

Guys I've tried for 2 days to make a flashable zip to flash the latest bootloader and recovery but the tools asus provided only appear to work with the stock recovery. CWM currently does not support this method and I'm giving up at the risk of bricking.

So the method for now is the one posted above:

Fastboot flash the asus stock recovery.img and then update to the latest firmware then fastboot flash the latest CWM.

2 days, how dare you. You should be concentrating on b4 and only b4.


Sent from my Galaxy Nexus using XDA Premium 4 mobile app

 

[Calp]

Guys I've tried for 2 days to make a flashable zip to flash the latest bootloader and recovery but the tools asus provided only appear to work with the stock recovery. CWM currently does not support this method and I'm giving up at the risk of bricking.

So the method for now is the one posted above:

Fastboot flash the asus stock recovery.img and then update to the latest firmware then fastboot flash the latest CWM.

Wow, you're crazy! I really appreciate your help, mate.
For anyone else needing to do these stips, here's the download link for the stock recovery which you have to flash first: http://droidbasement.com/db-blog/?p=3210 ( i also tried a different one but only this one did work in the end)

Also, thanks a lot for the ROM, sdbags. I've been using it for a couple of hours now and it seems to work like a charm. Great work, mate!


Sent from my K00C using xda app-developers app

 

[ticica]

How can I tell which bootloader (BL) and firmware (FW) I run currently? When I hold power/volume down, the top of the screen says user BL released by "US_epad-10.26.1.7". When I boot into Android and go into settings -> about -> software, I see Build number "JSS15J.US_epad-10.26.1.18". Is the 1.18 the firmware (FW) version?
Finally, is there a way to upgrade BL/FW to ...1.18 version without using an external SD card?

 

[Sleeepy2]

US_epad-10.26.1.7 is your BL version
JSS15J.US_epad-10.26.1.18 is your OS version.

Currently the only way to updated the BL is from the SD card

 

[ticica]

Thanks. Just to verify, you don't think doing "fastboot flash boot boot.img" will work? (using boot.img from UL-K00C-US-10.26.1.18-user.zip).
Also, by SD-card method, are you talking about the rename “WW_10_26_1_18_SDupdate” to “T4_SDUPDATE.zip" process etc.? It seems that I have the US SKU, and not sure if this would work, being that it mentions WW in the file name.

US_epad-10.26.1.7 is your BL version
JSS15J.US_epad-10.26.1.18 is your OS version.

Currently the only way to updated the BL is from the SD card

 

[Sleeepy2]

I am no expert but I am pretty sure that the fastboot method doesn't work as there have been several people with the wrong bootloader issue and and the only way to do it was with the official update.

I am not sure about using the WW file or not. I am in canada and I used the other file to update and that did the bootloader also. With the status your in now I am not sure if the US one will work or not. I would try the US one first and then if not go with the steps from pershoot
http://forum.xda-developers.com/showpost.php?p=52187532&postcount=87

 

[MilesWilford]

Can someone please rehost the stock recovery.img file? The link's dead and I need it to get myself fixed up.

 

[Sleeepy2]

Can someone please rehost the stock recovery.img file? The link's dead and I need it to get myself fixed up.

It's still there, try this link
http://droidbasement.com/asus/tf701t/stock/