[Q] TMOBILE 6606 upgrade possible?

[foxhsu]

Does anyone know if TMobile brand Sony Xperia Z able to flash the other ROMs. I know it's BL and will lose TMO Wifi call function. But TMO stop at 4.3, and I cant see any hope for 4.4, 5.0. Is possible to flash other ROMs? Thank you.

 

[muhammadahmadmujtaba]

Yes, you can.

Does anyone know if TMobile brand Sony Xperia Z able to flash the other ROMs. I know it's BL and will lose TMO Wifi call function. But TMO stop at 4.3, and I cant see any hope for 4.4, 5.0. Is possible to flash other ROMs? Thank you.

WIFI calling function will not work ofcourse but if you are not satisfied you can flash stock firmware anyday using XPERIA FLASH TOOL. You need to unlock the bootloader using official Sony Method. If you can unlock the BL which I was able to.
Then you can download and install Cyanogenmod 13,12,11,10. (C6603) - Yes, it has issues, so I switched to.
SlimKat 4.4.4 - YUGA (C6606) - NO BUGS AT ALL.

Also do remember to flash SGAPPS from their repository no the opengapp.org gapps.

Big difference I found is that Stock OS on new flash takes around 500-700MBs of RAM where SlimKAT takes only 350MB w/o GAPPS and 500MBs GAPPS.

Good luck! I will show you screenshots

 

[ecarlson]

You need to unlock the bootloader using official Sony Method. If you can unlock the BL which I was able to.
Good luck! I will show you screenshots

What is the official Sony method to unlock the C6606? And can you post screenshots?

 

[exdeee]

What is the official Sony method to unlock the C6606? And can you post screenshots?

The official tutorial is over here: https://www.youtube.com/watch?v=jWPYicb8_-Q

 

[ecarlson]

I guess that means there's still no way if your C6606 says "Bootloader unlock allowed: NO".