[myTouch 4G Q&A, Help & Troubleshooting] saranhai:
Help! I think my Mytouch 4G is bricked!!! ​

i have seen a LOT of these threads lately, and this thread is made to hopefully be able solve some of your problems.

most people think that a brick means "can't get into android system, phone is dead beyond repair." most of the time, this is NOT true.

Disclaimer: Please make sure you know what you are doing before proceeding. if your device wasn't bricked before but you somehow screwed it up, i

will not

be responsible. YOU are responsible for whatever happens to your device. i am just here to give you a few tips, and to help you out. once again, PLEASE MAKE SURE YOU KNOW WHAT YOU'RE DOING BEFORE DOING IT!

Needed Things:

-computer

-android SDK, ADB. PLEASE TAKE THE TIME TO INSTALL AND LEARN TO USE ADB, IT COULD SAVE YOUR DEVICE BIG TIME. we have plenty of guides on how to use adb, please search them up and READ THROUGH THEM.

-a Mytouch 4G, or HTC Panache

-USB cable

-SDcard (doesn't matter what size)

ask and answer these two questions to yourself:

1) can you enter bootloader?

2) can you enter recovery?

if you've answered yes to any one of them, then chances are, you are still saved.

Note: if you can't enter either one of those, and your device doesn't show any signs of life, then don't bother reading on, you are truly bricked.

Notice: When you try flashing the PD15IMG.zip in bootloader, make sure the phone is NOT connected to the computer.

For S-On users:

Q: help! my phone is stuck on the Mytouch logo screen!

A: pull the battery, and see if you can get into the bootloader using volume down+power buttons

if you can get into the bootloader:

1) see if you can wipe data/do a factory reset in bootloader.

2) flash the stock Glacier PD15IMG.zip file choose from either

Android 2.2.1 OR Android 2.3.4

rename both files to PD15IMG.zip if not already.

-put both files in the ROOT of your SDcard, reboot into bootloader/hboot, and follow the onscreen instructions

note: if you are still unclear on what to do, read the "HOW TO RESTORE TO STOCK" section

Q: bootloader is giving me Fail-PU errors when trying to update

A: refer to the eMMC section

For S-Off Rooted users:

rooted S-Off devices are a bit more complicated.

Q: help! i can't get into the android system, phone stuck on Mytouch logo!

A: like for S-On users, see if you can get into either the bootloader, but also the recovery (usually clockworkmod).

if you can get into either of those, wipe data/factory reset, and reboot.

Q: bootloader factory reset, still stuck on Mytouch screen

A: well, if you have clockworkmod recovery (or 4EXT recovery) get into the recovery, wipe all user data/cache/dalvik cache and try reflashing a backup, or flash a new rom.

Q: reflashing didn't work, clockworkmod is giving me errors about mounting something.

A: new way! try to clear cache and dalvik in recovery, somtimes that works. thanks to urmothersluvr for reminding me.

A: there are two things that cause this. both have VERY similar symptoms. the first is because of the failed eMMC chip (refer to eMMC chip section), and the second is because the recovery got messed up, probably because you've been switching between a lot of EXT3 and EXT4 roms. if this is the case, just download the PD15IMG.zip (Android 2.2.1) file (IT WILL RETURN YOU TO STOCK) and start over again. OR you can reflash the recovery through adb (MUST HAVE ENG HBOOT 0.85.2007). thanks to Nicgraner for reminding me! if bootloader gives Fail-PU errors, refer to eMMC section.

HOW TO RESTORE TO STOCK

​

if you think you have a failed eMMC...

many things can cause the eMMC to die. if you suspect that your eMMC chip has died, please check your eMMC serial using this guide here using adb (for rooted users only, since you must be in recovery for the command to work).

Ok, so my chip has died and i can't turn my phone on. can i send it in to t-mobile to replace it?

A: yes! BUT YOU MUST STILL HAVE YOUR WARRANTY WITH T-MOBILE. if you are S-On, you should have absolutely NO problems replacing at all. if you are S-Off, you might encounter some minor problems, but replacing should still be ok. what i did was play dumb with them, and they just sent me a new one. my old one died of bad eMMC, it was rooted, S-off and everything, even the splash screen said "rooted HTC Glacier" on it.

hopefully, this guide has helped you understand more of what has just happened to your beloved Glacier (MT4G).

if i forgot anything, or if you have anything to add to this, PLEASE LET ME KNOW

if i have helped, please hit thanks! :D