Originally Posted by ryannathans
I'm trying to find radio roms for my Vivid. (Telstra Australia varient)
I can't get 4g/lte, the phone radio just dies when I'm in 4g areas. I want to flash a new radio rom. Both Telstra (the phone) and the carrier I'm with Optus both use the same band/frequency and such I should probably just need to use any recent telstra radio rom.
I've searched but can't find any vivid radio roms. Where are they?
I'm not an expert, but I believe flashing radios is more of a hassle than regular ROMs. The radio is in a protected partition, which is not modifiable without S-OFF (or maybe some very specific and unknown code from the carrier). I also recall reading that the radio is on a different CPU (FCC regulations?), and that the phone first boots the radio through that CPU, and once that's ok, THEN the main CPU is activated to boot the rest of the phone. So if you screw up your radio, it could be very bad.
I found this thread kind of discussing flashing radios: