LG D800 G2 AT&T Unlock Fail "QCN Write Fail"

[dj_mix]

Tried Twice both times same error. what should I do?

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Platform: LG Qualcomm
Selected port: COM41
Selected model: D800
Reading info...OK
Mode: Normal
Model ID: D800
Firmware compiled date: Jul 26 2013
Firmware compiled time: 23:00:00
Firmware released date: Oct 18 2013
Firmware released time: 17:33:28
SW Version: M8974A-AAAANAZM-1.0.190034
IMEI: XXXXXX-00-XXXXXX-1
SPC: 000000
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Checking data...OK
Platform: LG Qualcomm
Selected port: COM41
Selected model: D800
Reading info...OK
Mode: Normal
Model ID: D800
Firmware compiled date: Jul 26 2013
Firmware compiled time: 23:00:00
Firmware released date: Oct 18 2013
Firmware released time: 17:33:28
SW Version: M8974A-AAAANAZM-1.0.190034
IMEI: XXXXXX-00-XXXXXX-1
SPC: 000000
Unlocking...
Reading QCN...
Send SPC...OK
Reading Mobile Property...OK
Reading Feature Mask...OK
Reading Roaming List 0...OK
Reading NV_Numbered Items...OK
Reading NV_Numbered SIM1 Items...OK
Reading NV_Numbered SIM2 Items...OK
Reading NV Items...OK
Reading EFS...OK
Reading Provisioning Items...OK
Reading QCN done!
Backup saved to "D800_XXXXXX00XXXXXX_21-02-2015_12-49-59.qcn"
Switching to Download mode...OK
Initializing flash...OK
Reading partition...OK
Reading security area...OK
Backup saved to "D800_XXXXXX00XXXXXX_21-02-2015_13-03-54.SEC"
Writing security area...OK
Switching to Normal mode...
Found model D800 at port COM41
Send SPC...OK
Writing QCN...Failed!
--------------------------------------------------------------------------------
Checking data...OK
Platform: LG Qualcomm
Selected port: COM41
Selected model: D800
Reading info...OK
Mode: Normal
Model ID: D800
Firmware compiled date: Jul 26 2013
Firmware compiled time: 23:00:00
Firmware released date: Oct 18 2013
Firmware released time: 17:33:28
SW Version: M8974A-AAAANAZM-1.0.190034
SPC: 000000
Unlocking...
Reading QCN...
Send SPC...OK
Reading Mobile Property...OK
Reading Feature Mask...OK
Reading Roaming List 0...OK
Reading NV_Numbered Items...OK
Reading NV_Numbered SIM1 Items...OK
Reading NV_Numbered SIM2 Items...OK
Reading NV Items...OK
Reading EFS...OK
Reading Provisioning Items...OK
Reading QCN done!
Backup saved to "D800_Bad_21-02-2015_13-06-51.qcn"
Switching to Download mode...OK
Initializing flash...OK
Reading partition...OK
Reading security area...OK
Backup saved to "D800_Bad_21-02-2015_13-21-01.SEC"
Writing security area...OK
Switching to Normal mode...
Found model D800 at port COM41
Send SPC...OK
Writing QCN...Failed!

[dj_mix]

I reset phone to factory phone looks like unlock, going to test further

UPDATE IMEI is 0 and phone runs sluggesh at dialing

[dj_mix]

Now have major Problem !! I did repair NVM, now phone will not detected by octopus.

I tried installing stock firmware still will not detect in octopus

[dj_mix]

Octopus Team can only get phone detected by box under download mode.

Can you prepare software to fix NVM and write my backup security under download mode?

Welcome to Octoplus/Octopus Box LG Software version 1.8.5
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Platform: LG Qualcomm
Selected port: COM2
Selected model: D800
Reading info...OK
Mode: Emergency
Initializing flash...OK
Model ID: LG-D800
SW version: LGD800AT-00-V10o-ATT-US-OCT-19-2013+0
LAF Version: 1.0
Product ID: E0000011410271020
IMEI: 013695-00-134585-1
Target operator: ATT
Hardware: rev_10
Battery level: 76%

[dj_mix]

Nevermind I was able to update to stock kitkat and box detected phone.

going to try unlock again

[dj_mix]

Unlocked successful. But have issues when dialing a number phone will freeze not respond

Sometimes dialer app times out maybe have issue with modem?

[Octopus box]

Sometimes dialer app times out maybe have issue with modem?

Yes, this can be. Try to re-flash the phone with another firmware.