[myTouch 4G Q&A, Help & Troubleshooting] AndroidHomme:
Hello, xda-developers,

I have a myTouch 4G that was updated to the 2.3.4 Gingerbread software and wanted to root it. In order to do so, after many research, it states that there is no root for the 2.3.4 Gingerbread software and for it to be rooted you'll have to downgrade it.

The reason why I wanted to root it is because I am having a problem with the WIFI connectivity in my home and was wondering if it will fix it. Same reason why I update it to the 2.3.4 Gingerbread software in the first place. The myTouch 4G that I have will "RARELY" connect to my wireless router in my home but for some reason it doesn't fail me when connected to other wireless routers outside of my home even when having the same router. But this is now not the problem.

As you can read, the title says it all. My problem now is that I just soft bricked my myTouch 4G after a downgrade that I followed here: http://xdaforums.com/showthread.php?t=1178912# Like the noob always say when something goes or went wrong, "Boohoo, I don't know what I did wrong. Someone, please, help me." But I THINK I know what I did or went wrong.

I followed the guide strict and carefully hoping I don't brick it but then I said to myself, "It's a 99.9% chance I won't, I think... what can possibly go wrong?" Everything went well. I did everything it says and once the update bar fills up to the top, BAM! It hits the "T-Mobile myTouch 4G" boot screen. I was happy. Very happy because I felt accomplished and one step closer to excitingly freeing my phone. But my hopes went down when it stayed like that for hours on end. I pulled the battery out and reboot it and nothing was fixed. Although it was stuck, I still can access the bootloader. I pulled out the battery again and boot it to the bootloader and re-updated it again and nothing was fixed. I yanked out the battery one last time and deleted the PD15IMG.zip file from the SD card to keep it from asking to update everytime I boot it to the bootloader so I can factory reset it but, still, that didn't help.

Like I said. I think I know what I did or went wrong. Examine the guide. The "Gaining Temp Root" part I did right. The "Changing Version Number to Allow Downgrade" I did correct and the results on the command prompt came out the way it stated it should come out. THEN! I yanked out the battery to reboot it after that. When I've done so I continued to the next procedure and everything went how it says it should go but, instead of the end results, I got it stuck on the "T-Mobile myTouch 4G" boot screen after the update. I think that's where I messed up. When I yanked out the battery to reboot it after the "Changing Version Number to Allow Downgrade" part. I believe it kicked it out from root. It is a temp root by the way and I read it somewhere that said, "Once you're rooted you CAN downgrade it." Something like that which made me think it wasn't rooted after that reboot and the downgrade wasn't a success. I also have two other guesses in which I think soft bricked the phone. I either have a bad eMMC-boot or the PD15IMG.zip was bad. These are my thoughts in what went wrong. I'm asking for your help. So can you help me find the solution to this problem?

Thank you very much in advance for your time and effort into reading this and helping me out. I really appreciate it.

-Victor​

P.S. Here's the information on the myTouch 4G's bootloader:

GLACIER PVT SHIP S-ON

HBOOT-0.89.0005

MICROP-0429

RADIO-26.03.02.26_M

eMMC-boot

Apr 14 2011,13:18:22

Again, Thank you.