G891A Unlock Failed !!!

[celumaster.]

Hello, i try to unlock using server but failed, check it:

Operation: Read Codes via Server
Selected model: SM-G891A
Selected port: COM89 SAMSUNG Mobile USB Serial Port
Software version: 29.0

Checking Login and Password... OK
Ballance: 40 crd.
Waiting ADB device... OK
Reading phone info...
Model: SAMSUNG-SM-G891A
Android version: 6.0.1
Product code: SM-G891AZDAATT
Phone version: G891AUCS2API2
PDA version: G891AUCS2API2
CSC version: G891AATT2API2
CSC country code: USA
CSC sales code: ATT
HW version: REV0.5
Phone SN: R38H60LM8WV
Chip name: MSM8996
Modem board: MSM8996
Security patch: 2016-09-01
RF cal date: 2016.06.20
IMEI:
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... OK
Searching Ramdump interface... COM10 detected
Reading data from phone... OK
Calculating... error (0)

Done with Samsung Tool PRO v.29.0

Please help me !!!

[celumaster.]

24 views and no answer ? please help me people, i really need to unlock this phone...

[celumaster.]

i am trying to update via sideload to pk2, i see many success logs on pk2 version...

[CHANDARAKK]

Originally Posted by celumaster.

i am trying to update via sideload to pk2, i see many success logs on pk2 version...

u have sucsse? just read code via z3x use combin buddy

[celumaster.]

Originally Posted by CHANDARAKK

u have sucsse? just read code via z3x use combin buddy

nothing sir, not success even after update to pk2, i tried with combi and the same error, looks like is software bug, because other man unlock this phone on pk2 version but he use 28.6.

i try to use that version(28.6) but it says update software error, looks like read codes via server only works with latest version installed...

Any other tip ?

[celumaster.]

here is the proof:

Fail
https://ibb.co/nx4MHF

Success
https://ibb.co/gXEcra

[CHANDARAKK]

Originally Posted by celumaster.

here is the proof:

ok give me teamviwer i try to help u

or reflash full stock and factory rest than try read code again

[bobet016]

downgrade the modem firmware and unlock again

[celumaster.]

Originally Posted by CHANDARAKK

ok give me teamviwer i try to help u

or reflash full stock and factory rest than try read code again

ok, i will try that tomorrow, when have phone in hands again, i did make update to pk2 using sideload and factory reset after upgrade, then try the unlock and the same error, i will restore to G891AUCS2API2_CL8737252_QB10881022_REV02_user_low_ ship_MULTI_CERT because that is the only full version i have, i will post results soon...

[celumaster.]

Unlock done after hard reset...

Thanks for your help my friends