[Q] Problems using T-Mobile RUU (Error 155)?
Tmobile HTC One Model PNO713000 (sim unlocked)
Firmware 4.06.1540.2 (latest Kit Kat)
Running Insert Coin 7 after a clean wipe. But on every single ROM, I have not been able to send MMS messages. Receive MMS just fine, send/receive SMS just fine. Checked the APNs, they are fine. (It's not the phone, I swap in my ATT sim card and send MMS just fine on any ROM). I unlocked everything and flashed immediately as I got the phone, so I have no idea if I ever tried to send a MMS while stock.
I want to use the TMobile 4.3 RUU from HTC's website. But it keeps giving me Error 155. Is it the SuperCID? Is it the hboot? Must I go back to S-ON? Downgrade the firmware? I want to go back to STOCK Tmobile (retaining S-OFF if possible). Just tried it after doing a fastboot relock and still Error 155.