LG K420n Panic Kernel [Answered]

[newchief]

Hi. My customer bring to me LG K420n with hang on logo or Panic Kernel when tried start. I flashed phone with K420n20E_00_1101 with octoplus LG without result still Panic Kernel. I tried repair emmc with MEdusa Pro with Factory file repair done correctly! - witout result - panic kernel, with smart repair- repair done correctly - panic kernel. What can i do more?

[newchief]

I also tried flash with file from support K420n_V20A_00_0725.oct

Welcome to Octoplus/Octopus Box LG Software version 2.6.5
--------------------------------------------------------------------------------
Checking data...OK
Platform: LG Qualcomm
Selected port: COM420
Selected model: K420N
Reading info...
Model ID: LG-K420n
IMEI:
Android version: 6.0
Battery level: 45%
SW Version: K42020a
Mode: Emergency
Initializing flash...OK
SW version: LGK420nAT-00-V10n-GLOBAL-COM-APR-28-2016+0
Android version: 6.0
LAF Version: 1.1
Product ID: C
IMEI: 3
Target operator: GLOBAL
Hardware: rev_12
--------------------------------------------------------------------------------
Writing phone firmware without real necessity is at your own risk.

Downgrade may lead to phone damage!

Please, make sure the phone's battery is fully charged.
Disconnect all other devices from the computer (including phones,
modems, etc.) and close all other running programs.
To avoid errors in the flashing process, use a clean PC (without any
installed drivers for other Qualcomm-based devices).
You should not run any other programs or attach new devices to your
computer during the flashing!
--------------------------------------------------------------------------------
Opening "K420n_V20A_00_0725.oct"...OK
Setting options...OK
Reading partitions...OK
Formating USERDATA...OK
Formating ENCRYPT...OK
Writing PrimaryGPT...OK
Writing sbl1...OK
Writing tz...OK
Writing hyp...OK
Writing rpm...OK
Writing aboot...OK
Writing sbl1bak...OK
Writing tzbak...OK
Writing hypbak...OK
Writing rpmbak...OK
Writing abootbak...OK
Writing persist...OK
Writing laf...OK
Writing boot...OK
Writing recovery...OK
Writing cust...OK
Writing factory...OK
Writing modem...OK
Writing system...OK
Writing BackupGPT...OK
Reading partitions...OK
Formating RCT...OK
Formating MPT...OK
Finalizing...OK
Writing firmware done!
Performed by 2.6.5 Software version.

Still Panic kernel.

[Octopus box]

My customer bring to me LG K420n with hang on logo or Panic Kernel when tried start

Still Panic kernel.

If after successful of writing firmware your device still hangs on logo or with Panic Kernel screen, most likely it has HW problems. You can try to repair this device using tool, that supports repairing of this phone via USB or eMMC.

Also please read out Full Flash from your phone and send us, we will try to research where can be the problem with your device.

[newchief]

Ok i will try do it soon. Thank you.

[newchief]

Sended in PM message.

[newchief]

Sir, any results with researching ?

[Octopus box]

We have checked your full flash and it's correct. Most likely it's HW issue.

[newchief]

Originally Posted by Octopus box

We have checked your full flash and it's correct. Most likely it's HW issue.

Thank you for your support ;-)