Bad Mcu Checksum error

[GreaT]

I have tried the spyphone 1.2.nrx on my 3310 phone, i have loaded the full flash into nokix, everythink is ok. But when i tried to flash back, th eflasher says bad mcu cheksum.

[mestrini]

Hi,

when you apllied the spy script to the flash you changed some bytes.

nokia phones (and any other brand) make some calcs with the bytes in the firmware and check the value with some locations stored in the firmware. If they don't match then phone says CONTACT SERVICE.

Some flash programs check the flash file before uploading it to avoid that error and that's what happened to your file.

Solution is to aplly in same flash (with nokix) both checksums killers scripts:
kill_faid_check.nrx
kill_mcu_check.nrx

cheers