continues in byte 55.... downgrade to 4.70...... and the gnd has been connected from photo taken from the support....
Create autobackup of PM 308
Reading PM Field 308 Subfield 1 with length 8192 bytes
Saving autobackup to file: RM-217_354827013267438_Locked_Keycnt_0_Fbuscnt_0__V_0 4.70_24-01-07_RM-217_(c)_Nokia..bin
Auto Write PM 308 procedure started
Searching for backup file with lowest FBUS count ...
Finded backup file: RM-217_354827013267438_Locked_Keycnt_0_Fbuscnt_0__V_0 4.70_24-01-07_RM-217_(c)_Nokia..bin
Writting PM Field 308 Subfield 1 with length 8192 bytes
Reset phone ...
PM Field 308 Subfield 1 written OK
Reading SP Locks after Auto Write PM 308 ...
SP LOCK status:
Config Key: 7321010000000000
Block 1: CLOSED Type 5 Data: 732101
Keyboard wrong codes counter: 0 wrong tries from max. 3 tries
Cable wrong codes counter: 0 wrong tries from max. 10 tries
Reset phone in TEST mode ...
Checking if model/version is supported for unlock ...
Please connect testpoints
Testpoints connected OK
Keep Testpoints connected until unlock finish!
Unlocking phone ...
Try number: 1
Sending SP code: #pw+012345678901234+7#
Response byte: 55
Try number: 2
Sending SP code: #pw+012345678901234+7#
Response byte: 55
Try number: 3
Sending SP code: #pw+012345678901234+7#
Response byte: 55
Try number: 4
Sending SP code: #pw+012345678901234+7#
Response byte: 55
Try number: 5
Sending SP code: #pw+012345678901234+7#
Response byte: 55
Try number: 6
Sending SP code: #pw+012345678901234+7#
Response byte: 55
Try number: 7
Sending SP code: #pw+012345678901234+7#
Response byte: 55
Try number: 8
Sending SP code: #pw+012345678901234+7#
Response byte: 55
Try number: 9
Sending SP code: #pw+012345678901234+7#
Response byte: 55
Try number: 10
Sending SP code: #pw+012345678901234+7#
Response byte: 55
Unlock fail. Please try again.
some solution.....