Hey, thanks for a great guide. I do have a problem however, and I'm wondering if anyone could help.
My dads Z610i got a WSOD and I decided to help him fix it, so I followed this guide and first uppgraded to CID52, then reflashed the phone using the following files:
Z610_R1KH001_MAIN_GENERIC_MY_RED52.mbn
Z610_R1KH001_FS_EUROPE_4_RED52.fbn
HB1-06_Gen_CDA102568_13_R5A_GENERIC_EUROPE_4
This seems to have worked just fine, and the phone starts up without a problem and defaults to Swedish like I actually wanted it to. However, it now tells me to "insert the correct SIM". My dad uses the same operator I do (Swedish company called Halebop), so there shouldn't be a lock in there.
What could have happened? Could the reflashing have brought back a network lock that had been removed before? The phone is branded as "3" (another carrier), but had been working fine. If this isn't the case, what else could it be? My SIM-card works fine in my phone.