How to downgrade RAP3Gv4, RAPUv1, RAPUv2, NEW RAPIDO, Broadcomm via USB cable:
##### Tick USB Mode #####
1. Backup RPL - IMEI and LOCKS->IMEI->Backup RPL
2. Backup Full PM - PM/PP->Read Full PM
3. Full Erase Phone - Flashing->EraseFlash->Scan->Erase
4. Write Flash with lower version - Flashing->WriteFlash - ENO needed for supported models
5. Write Backup RPL - IMEI and LOCKS->IMEI->Write RPL
6. Authorize Phone - ATF Network->Login to account-> Authorize a BB5 NEW HASH Phone
7. Repair SD and Writing PM Backup - PM/PP->Stand Alone SX4->SX4 PM Authorization->Select PM Backup
Phone should be downgraded now. Logs are available below.
ATF SW v8.63 or later will be used in order to downgrade SL3
phones via USB Cable ONLY.
For RAP3 phones - steps are SAME just need FBUS cable for them.
Nokia BB5 SL3 Firmware downgrade via USB cabl
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