Backup of PM in a 2760 v05.61 - GSM-Forum

Hell-GSM · 07-04-2009, 23:51

Hi, I unlocked a 2760 today. But when I tried to backup the PM. I got an error.

[120,0] Reading 120 bytes
Failed to read PM -> Failed to read PM Record 120,0

I repeat the phone is unlocked now and working OK....
Just I want to know why this happened. Because I always want to backup the PM in case something happens today I didn't and everything went fine. But who knows tomorrow???

what is the correct procedure for unlocking a DCT4
Thanks

NADEEM GONDAL · 07-05-2009, 06:50

well normally with dct4 plus there r only 1% chance of anything goes wrong,,
Mostly it wont
Simply u press Read INFO see if all is OK
Then proceed for unlocking that ALL...
read PM start from 0 to 512 and save ....reading will be started

karwos · 07-08-2009, 14:42

It's very normal,
dct4plus phones have protected SL area (pm 120) against read/write.

Hell-GSM · 07-09-2009, 13:09

so how do I backup in case anything goes wrong??
THANKS!

karwos · 07-09-2009, 22:41

Simlock backup is being backuped up automaticlally till Build 7828 (latst update with NCK codes calculation).
However such backup with simlock area and RSA signature, CAN'T be written again to phone, it have protected field 120 against write (after patching FW is possible to read it), so only way is to proper unlock which will skip RSA sig check,
in fact with DCT4plus nothing can go wrong

07-04-2009, 23:51	#1 (permalink)
Hell-GSM Freak Poster Join Date: Jan 2005 Age: 36 Posts: 389 Member: 112131 Status: Offline Sonork: 1582257 Thanks Meter: 80	Backup of PM in a 2760 v05.61 Hi, I unlocked a 2760 today. But when I tried to backup the PM. I got an error. [120,0] Reading 120 bytes Failed to read PM -> Failed to read PM Record 120,0 I repeat the phone is unlocked now and working OK.... Just I want to know why this happened. Because I always want to backup the PM in case something happens today I didn't and everything went fine. But who knows tomorrow??? what is the correct procedure for unlocking a DCT4 Thanks

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07-05-2009, 06:50	#2 (permalink)
NADEEM GONDAL No Life Poster Join Date: Aug 2007 Location: England Posts: 3,691 Member: 575900 Status: Offline Thanks Meter: 3,177	well normally with dct4 plus there r only 1% chance of anything goes wrong,, Mostly it wont Simply u press Read INFO see if all is OK Then proceed for unlocking that ALL... read PM start from 0 to 512 and save ....reading will be started

07-08-2009, 14:42	#3 (permalink)
karwos No Life Poster Join Date: Feb 2005 Location: Poland Age: 34 Posts: 4,943 Member: 117496 Status: Offline Sonork: 100.83919 Thanks Meter: 22,689	It's very normal, dct4plus phones have protected SL area (pm 120) against read/write.

07-09-2009, 13:09	#4 (permalink)
Hell-GSM Freak Poster Join Date: Jan 2005 Age: 36 Posts: 389 Member: 112131 Status: Offline Sonork: 1582257 Thanks Meter: 80	so how do I backup in case anything goes wrong?? THANKS!

07-09-2009, 22:41	#5 (permalink)
karwos No Life Poster Join Date: Feb 2005 Location: Poland Age: 34 Posts: 4,943 Member: 117496 Status: Offline Sonork: 100.83919 Thanks Meter: 22,689	Simlock backup is being backuped up automaticlally till Build 7828 (latst update with NCK codes calculation). However such backup with simlock area and RSA signature, CAN'T be written again to phone, it have protected field 120 against write (after patching FW is possible to read it), so only way is to proper unlock which will skip RSA sig check, in fact with DCT4plus nothing can go wrong