[Q] Flashing Stock ROMs - Bell/Telus

[PiMPSoFT]

I figured I'd ask here instead of my usual 'try it to see' approach and bricking the phone. I have an Ace IIx from a friend I THINK is from Telus and is currently running FW-C (see below). Can I upgrade to FW-A although it's a different company and will I still need to unlock it if so?

From SamMobile:
(FW-A) Canada (Bell Mobile) 2013 June 4.0.4 S7560MVLAMF2 -> QUESTIONABLE
(FW-B) Canada (Bell Mobile) 2012 October 4.0.4 S7560MVLALJ7

(FW-C) Canada (Telus) 2012 October 4.0.4 S7560MVLALJ7 -> CURRENT

 

[PiMPSoFT]

Anyone?

Sent from my Stock GT-S7560M