[HOW-TO] Downgrade from JB to ICS with locked bootloader

buhohitr · Oct 18, 2012

pr4wn3r said:
having the same problem.
when trying to get into recovery mode (power + vol down, then select the recovery mode) i dont get into recovery mode, but i get a dead android with an exclamation mark..

You need to describe the process in your OWN words, so we can help.
Also make sure you don't have any ZIP files in the root of your internal sdcard.
Red exclamation mark usually caused by:
1. Corrupted download file (re download)
2. Incorrect file name (make sure the download file from Asus website is unzip, the second zip file rename to EP201_768_SDUPDATE.zip
3. Extra zip files in the root directory (delete all the zip file in internal or external root directory of SD card)
4. corrupted external sd card (if you use external sdcard, just reformat with fat32).
5. Frozen system apps/modified properties file.(unfreeze sall system apps and restore original properties file)

hit173 · Oct 18, 2012

buhohitr said:
You need to describe the process in your OWN words, so we can help.
Also make sure you don't have any ZIP files in the root of your internal sdcard.
Red exclamation mark usually caused by:
1. Corrupted download file (re download)
2. Incorrect file name (make sure the download file from Asus website is unzip, the second zip file rename to EP201_768_SDUPDATE.zip
3. Extra zip files in the root directory (delete all the zip file in internal or external root directory of SD card)
4. corrupted external sd card (if you use external sdcard, just reformat with fat32).
5. Frozen system apps/modified properties file.(unfreeze sall system apps and restore original properties file)

I have done evrything possibleto get this to work. I even wiped mytab clean and still nothing. This is what i did.

1. I downloaded the file from asus website unzipped it nd renamed it.
2. Placed it on the root of my card
3. Went into recovery mode holding down power+volume down
4. Pressed volume up before the 5 seconds to get into the recovery.
5. Boom red exclamation with open android.
6. Redownloaded did everything again.
7. Made sure I didn't have any other zip file inside the root of my Sd card.
8. Same **** again.

buhohitr · Oct 18, 2012

hit173 said:
I have done evrything possibleto get this to work. I even wiped mytab clean and still nothing. This is what i did.

1. I downloaded the file from asus website unzipped it nd renamed it.
2. Placed it on the root of my card
3. Went into recovery mode holding down power+volume down
4. Pressed volume up before the 5 seconds to get into the recovery.
5. Boom red exclamation with open android.
6. Redownloaded did everything again.
7. Made sure I didn't have any other zip file inside the root of my Sd card.
8. Same **** again.

Have you tried to download straight from your tab, unzip renamed and copy to the root of your INTERNAL SD card??

hit173 · Oct 19, 2012

buhohitr said:
Have you tried to download straight from your tab, unzip renamed and copy to the root of your INTERNAL SD card??

Yup 1st time i tried it was like that

Sent from my ASUS Transformer Pad TF700T using XDA Premium HD app

xcal321 · Oct 19, 2012

hit173 said:
I have done evrything possibleto get this to work. I even wiped mytab clean and still nothing. This is what i did.
-->8--

I recovered from a softbricked JB .16 (rooted and locked) just 3 days ago. I could have recovered JB .16, but I wanted to get root back. So after I recovered to ICS .30 I rooted it and then manually upgraded to JB .16 using the OTA package I had kept aside (backed up to NAS). The next day JB .18 OTA was released and worked just fine.

Before I could restore/downgrade I had to buy a MicroSD card. Looking for a suitable one, I discovered some of the cards do not work when working from recovery mode. Have you tried using a different card? Also, my card (Kingston SDHC 32GB class 10) came formatted as FAT32, which is what I used for the recovery. I'm not sure if it has to be FAT32, but at least for me it worked.

buhohitr · Oct 19, 2012

hit173 said:
Yup 1st time i tried it was like that

Sent from my ASUS Transformer Pad TF700T using XDA Premium HD app

I have one more you can try. Download the full package file from Asus, unzip the file but DO NOT RENAME. The file name should be US_epad-user-10.4.4.16.zip, copy this to the root of your micro SD card. Insert the card back to your tablet. As soon as you inserted, about couple seconds, you should see a notification ask you to upgrade. Good luck.

hit173 · Oct 19, 2012

buhohitr said:
I have one more you can try. Download the full package file from Asus, unzip the file but DO NOT RENAME. The file name should be US_epad-user-10.4.4.16.zip, copy this to the root of your micro SD card. Insert the card back to your tablet. As soon as you inserted, about couple seconds, you should see a notification ask you to upgrade. Good luck.

im going to try this right now

---------- Post added at 12:47 AM ---------- Previous post was at 12:05 AM ----------

For some strange reason it worked I named the update to the original name again and it popped up like an ota update after I restarted

Sent from my SPH-D710 using xda app-developers app

pr4wn3r · Oct 19, 2012

buhohitr said:
You need to describe the process in your OWN words, so we can help.
Also make sure you don't have any ZIP files in the root of your internal sdcard.
Red exclamation mark usually caused by:
1. Corrupted download file (re download)
2. Incorrect file name (make sure the download file from Asus website is unzip, the second zip file rename to EP201_768_SDUPDATE.zip
3. Extra zip files in the root directory (delete all the zip file in internal or external root directory of SD card)
4. corrupted external sd card (if you use external sdcard, just reformat with fat32).
5. Frozen system apps/modified properties file.(unfreeze sall system apps and restore original properties file)

I did a full wipe and a factory reset to make sure that all teh system apps were fine!the problem is,i dont get to the point where i can flash the .16
The dead android already comes when trying to enter recovery mode..

Samsung Galaxy Sll - CM9
Asus Transformer Pad TF700T - rooted

buhohitr · Oct 19, 2012

pr4wn3r said:
I did a full wipe and a factory reset to make sure that all teh system apps were fine!the problem is,i dont get to the point where i can flash the .16
The dead android already comes when trying to enter recovery mode..

Samsung Galaxy Sll - CM9
Asus Transformer Pad TF700T - rooted

Try this:
Download the full package file from Asus, unzip the file but DO NOT RENAME. The file name should be US_epad-user-10.4.4.16.zip, copy this to the root of your micro SD card. Insert the card back to your tablet. As soon as you inserted, about couple seconds, you should see a notification ask you to upgrade. If you don't see it just reboot your device. Good luck.

taaz69 · Nov 2, 2012

Unable to downgrade to ICS

Has anyone been able to get this to work? I'm able to get into recovery and the Android starts churning on the EP201_768_SDUPDATE. After a little bit, I get the android with red exclamation mark. I tried unzipping the .30 file and placing the zip on the SD card. The tablet sees the update and goes through the usual "Do you really want to downgrade, etc" and then goes into the install but, again after a bit I get the android with red exclamation mark.

Currently I'm on JB .18. I had just got this tablet after doing a warranty return and shortly after firing up, I got the notice to upgrade to JB 16. I could kick myself for not reading the forums first.

So, has anyone found a way?

Thanks.

ingenihero · Nov 3, 2012

taaz69 said:
Has anyone been able to get this to work? I'm able to get into recovery and the Android starts churning on the EP201_768_SDUPDATE. After a little bit, I get the android with red exclamation mark. I tried unzipping the .30 file and placing the zip on the SD card. The tablet sees the update and goes through the usual "Do you really want to downgrade, etc" and then goes into the install but, again after a bit I get the android with red exclamation mark.

Currently I'm on JB .18. I had just got this tablet after doing a warranty return and shortly after firing up, I got the notice to upgrade to JB 16. I could kick myself for not reading the forums first.

So, has anyone found a way?

Thanks.

Tried with a exFAT microSD, it did not worked but then tried with a FAT32 micro SD it worked. Here is what I did:

1. Format micro SD to FAT32 format (not a quick format) if it is not FAT32 already
2. Copy needed downgrade firmware to microSD without renaming
3. Insert micro SD to tablet
4. Tablet recognizes the downgrade update and ask for continue
5. Continue with the process
6. Tablet reboots
7. Tablet downgrades its OS to 4.0.3

This worked for me...

taaz69 · Nov 6, 2012

ingenihero said:
Tried with a exFAT microSD, it did not worked but then tried with a FAT32 micro SD it worked. Here is what I did:

1. Format micro SD to FAT32 format (not a quick format) if it is not FAT32 already
2. Copy needed downgrade firmware to microSD without renaming
3. Insert micro SD to tablet
4. Tablet recognizes the downgrade update and ask for continue
5. Continue with the process
6. Tablet reboots
7. Tablet downgrades its OS to 4.0.3

This worked for me...

I finally got time to do this. Worked perfectly. Thank you so much for the assist.

dirtyharryiv · Nov 14, 2012

Hi,

i cant find the correct firmware on the asus site.... any help?

thx

harry

---------- Post added at 03:14 PM ---------- Previous post was at 03:05 PM ----------

dirtyharryiv said:
Hi,

i cant find the correct firmware on the asus site.... any help?

thx

harry

Found it here
http://xdaforums.com/showthread.php?t=1734005

holyfrey · Dec 2, 2012

What most I rename the update file when I gonna copyed in to the internal storage and not a microsd card ?
As I know you can update from internal storage, what most I name the file then ? is i EP201_768_UPDATE.zip then or ?

aznmode · Dec 3, 2012

holyfrey said:
What most I rename the update file when I gonna copyed in to the internal storage and not a microsd card ?
As I know you can update from internal storage, what most I name the file then ? is i EP201_768_UPDATE.zip then or ?

You need to copy the renamed file to root of micro sd card. Turn tablet off and when you turn it on hold the volume down (one closer to the inside). When you see texts on the left corner of the screen, press the other volume button. Let it flash and thats it. You will be back to ICS welcome screen after.

Sent from my Transformer Prime TF201 using Tapatalk 2

fortunz · Dec 3, 2012

already answered above. post deleted

DjKarras · Dec 5, 2012

I have one question regarding this method... When going to the Asus website, I notice that I cannot download the ICS .30 firmware anymore, only the JB one! I understand that if I want to root I need to be ICS, but right now my tablet is in JB already (and not behaving extremely well, that's why I want to root). Is there any other mirror I can use to download the .30 firmware?

Thanks!

buhohitr · Dec 5, 2012

DjKarras said:
I have one question regarding this method... When going to the Asus website, I notice that I cannot download the ICS .30 firmware anymore, only the JB one! I understand that if I want to root I need to be ICS, but right now my tablet is in JB already (and not behaving extremely well, that's why I want to root). Is there any other mirror I can use to download the .30 firmware?

Thanks!

Sure, right here:
http://xdaforums.com/showthread.php?t=1946456

DjKarras · Dec 5, 2012

buhohitr said:
Sure, right here:
http://xdaforums.com/showthread.php?t=1946456

Thanks! I feel stupid, I swear I did a search of the forums before posting...

ShockDoctor7 · Dec 9, 2012

holyfrey said:
What most I rename the update file when I gonna copied in to the internal storage and not a microsd card ?
As I know you can update from internal storage, what most I name the file then ? is i EP201_768_UPDATE.zip then or ?

What worked for me was renaming it: EP201_768_SDUPDATE ---- but BUT but: It needs to be a .zip file type. I removed the .ZIP from the end and it worked! No more Android on his back with a red exclamation mark. It's what I had to do because I am using windows 7 which doesn't show the .zip extension in the file name even though it's really there. So, when the miniSD card is read it would appear to the tablet as EP201_768_SDUPDATE.ZIP.zip - which would give a bad result by having the double extension in the file-name.

The post I followed was down the page about halfway here: http://xdaforums.com/showthread.php?t=1833212

The OP there made a note of this in red but it's easy to overlook. This is probably what many of you are doing...give this a try if you're using Win7, remove the .zip in the filename from the post that you use to rename the download....worked for me like a champ...then I followed instruction at the top of the same post I linked to get root......used Voodoo root keeper to backup root.....temp unroot...then pushed the Jelly Bean update....restored root from backup with Voodoo root keeper....and WHAM! I've now got root on JB. I'd strongly recommend a factory reset once this work is all finished to keep things running well.

I don't take any credit for this work.....this is just a post to help you find the goodies the great guys have provided here for us...I had a hard time and kept getting the droid on his back with a red exclamation mark.....this is what finally worked for me....hope it helps someone.

[HOW-TO] Downgrade from JB to ICS with locked bootloader

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