I tried to unlock K550 but phone gone dead and I had information :
can't get packet start.
no ack during gdfs_readvar !
SCRC READ FAILURE
so I tried to write teh GDFS according to instruction and problem persist
here it is:
SIGNED MODE (USING SERVER)
CFG:100000000000
RESET MODE STARTED
ChipID:9900,EMP protocol:0301
Speed:921600
RESET:070703 1106 NPACXC1250329_DB2020_CERTRESETLOADER_P3AA
FLASH ID: 2019
GOT SEED:AA7514342380B36E157065EC
P96 AUTH PASSED
OTP LOCKED:1 CID:51 PAF:1 IMEI:35601901968279
PHONE SUCCESSFULLY RESET TO DEVELOPER STATE
Elapsed: 15 secs.
CFG:000000000000
ChipID:9900,EMP protocol:0301
Speed:921600
LDR:071130 1150 NPACXC1250330_DB2020_PRODUCTIONIDLOADER_P3M
OTP LOCKED:1 CID:51 PAF:1 IMEI:35601901968279
ACTIVE CID:49 COLOR:BROWN
LDR
B2020 SERVICE LOADER FOR SETOOL2
FLASH ID: 2019
writing "C:\Documents and Settings\art\Pulpit\setool\gdfs_in_ssw_format\db20 20\k550_gdfs_SSW.ssw"
CURRENT FLASH FILE CID: 49
SSW uses full hash, hash len is: 640
Will flash 32 blocks...
Setting up GDFS...
OTP WRITE NOT EXECUTED
WRITING CLEAR SIMLOCK UNITS...
SIMLOCK CODES SET TO "45287718"
SIGNING...
Elapsed: 40 secs.
CFG:000000000000
ChipID:9900,EMP protocol:0301
Speed:921600
LDR:071130 1150 NPACXC1250330_DB2020_PRODUCTIONIDLOADER_P3M
FLASH ID: 2019
OTP LOCKED:1 CID:51 PAF:1 IMEI:35601901968279
ACTIVE CID:49 COLOR:BROWN
no ack during gdfs_readvar !
SCRC READ FAILURE
Elapsed: 2 secs.
CFG:000000000000
ChipID:9900,EMP protocol:0301
Speed:921600
LDR:071130 1150 NPACXC1250330_DB2020_PRODUCTIONIDLOADER_P3M
OTP LOCKED:1 CID:51 PAF:1 IMEI:35601901968279
ACTIVE CID:49 COLOR:BROWN
LDR
B2020 SERVICE LOADER FOR SETOOL2
FLASH ID: 2019
writing "C:\Documents and Settings\art\Pulpit\setool\eroms\db2020\DB2020EROM _CNV_RED52_BROWN_CID49_DB2020.ssw"
CURRENT FLASH FILE CID: 49
SSW uses full hash, hash len is: 40
Will flash 2 blocks...
Setting up GDFS...
OTP WRITE NOT EXECUTED
WRITING CLEAR SIMLOCK UNITS...
SIMLOCK CODES SET TO "56311462"
SIGNING...
Elapsed: 10 secs.
CFG:000000000000
ChipID:9900,EMP protocol:0301
Speed:921600
LDR:071130 1150 NPACXC1250330_DB2020_PRODUCTIONIDLOADER_P3M
FLASH ID: 2019
OTP LOCKED:1 CID:51 PAF:1 IMEI:35601901968279
ACTIVE CID:52 COLOR:RED
no ack during gdfs_readvar !
SCRC READ FAILURE
Elapsed: 2 secs.
It's my old customer and I'm determinated to fix it so if someone help me
please I'll pay 5 GBP to his paypal acc
Thank you