[Q] Converting an AT&T to T-Mobile. Help? topic

First off, thanks to everyone willing to read this and help me out. Here's the deal.

I got a cheap second-hand m8 locked on AT&T. So far I have sim-unlocked it, S-OFFed it, changed cid to 11111111(supercid), and added Philz recovery. I would like to find a firmware and rom for T-Mobile that has wifi-calling enabled, and flash it without bricking my phone. It still has the MID for AT&T/dev(0P6B120000). HBOOT version is 3.16.00000000.

Should I change the MID? What firmware can I flash? What roms are recommended? Do I need to update HBOOT?

I don't care about OTA's, once I am comfortable flashing roms on this thing, I'll do it that way.

I am coming from a Nexus 5 so I am familiar with the stupid easy methods for installing roms and radios and such and being impossible to brick. This phone seems to not be so easy, so I am being extra-careful with how I go about this, as it seems completely different to me. Also, some of the guides on here that I've read have had some conflicting and/or confusing information, not that I'm ungrateful, I just want to be absolutely sure before I trash my new phone.

Any help is appreciated. Thanks in advance. You guys are the greatest.

[Q] Nexus 7 (2012) - Converting to f2fs - stuck on google screen - bootloop? topic

a few times now over the months with my nexus 7 (2012) i have tried to convert to fsf2 with twrp manually and always seem to get stuck on the google screen for over 5 - 10 minutes, only once from my first try after simulating a battery pull (holding all the buttons down) I got past the google screen in normal quick time, but after trying my first reboot i got stuck on the google screen again. How long is the google screen at most supposed to be on the screen for before launiching the rom boot screen after converting to f2fs? Is the google screen bootlooping?

Most recent try at converting...

Reboot into TWRP (2.8.3.0) recovery
Wipe the system, data, cache, dalvik cache
Change system, cache, and data (one at a time manually) from EXT4 to F2FS
Reboot Recovery
In main TWRP menu, hit "Mount", and "Enable MTP" if it is not already enabled
Drag the two zip files you downloaded into the TWRP folder
Hit "Install", find the "TWRP" folder
Select the Slim group zip and swipe to flash
Go back and select the gapps zip and swipe to flash
Reboot the system
Wait a few minutes to boot up
stuck on google screen????

[Q] Converting to stock from GPE, not sure what happened topic

I had my AT&T HTC One M8 on the Google Play Edition RUU for a while and decided to switch back to Sense using this thread: http://forum.xda-developers.com/show....php?t=2733523
However, I can't figure out how to get a new operating system back on there. I flashed some firmware and after a few issues with the phone not going into custom recovery mode (solved by using a different firmware version), I got TWRP to work. I still can't get an actual OS on there, though.
Trying to boot the phone to system just opens recovery and I would normally try to install a ROM via TWRP but any time I try to put files on the phone, I get an error like this:


I'm clearly not an expert with this stuff. I just want to get my phone back to the way it was when I got it. Anyone have any ideas?

Converting 5322 to 5303? topic

Is it possible to convert 5322 to 5303 via Flashtool flashing firmware for 5303 downloaded with xperiafirm? like someone did itfor x50h and 5322.. :)