Lenovo a6020L36 imei null update ( ota ) - GSM-Forum

guim · 06-01-2018, 05:08

Lenovo imei null after updating automatically, I am with more than 10 devices here, I got a working back up of a device working by xxx, and I tried to repair by xxx, xxxxx, xxxxx, xxxx box, xxxxx, xxxxx, xxxxxx and no success (efs, security, qcn and even the rom of what was working) at the time of putting on the other devices, of the error and those that did not, came back the original imei of the device however, no network is just emergency call, someone has managed to make a functional repair of this model, I tried also for the official lenovo program, please I need urgent help

thankful

boganice · 06-01-2018, 22:34

Baseband is OK, or unknown?

**Brka** · 06-01-2018, 22:43

There is some rom backup, but it's for custom recovery (TWRP).
If you have ways to put TWRP into phone ... read more HERE

There are stock rom's, but probably nobody will give it for free.

A6020l36_USR_S042_1612091800_Q1021101.2_BMAIN_16G_ LAS - Android 5.x
A6020l36_USR_S155_1702121800_Q1021101.2_BMAIN_16G_ LAS - Android 6.x

Idea (with stock rom's) would be to downgrade, of course ...

b.r.
Alex

guim · 06-03-2018, 17:20

everything was unknown in the network part, (baseband) but I already installed recovery and super user, and no success using the processes above me spoken.

and yes already tried to put, the rom 5.1 that is the downgrade, and the 6.1 that is the current, but I did not succeed, can you give me one more tip? and thanks to you for answering the topic, the first time I have a moderator ...

the rom passes normal however the devices continues with the imei null undocks, or when the original imei returns continued without giving network,

**Brka** · 06-03-2018, 23:51

Okay, we have more job to do ...

First things first: While you still have custom recovery and root,
enable diag mode via adb (from pc), with next commands :

Code:

adb shell

su

setprop sys.usb.config diag,adb

(enter after each command, and at last one - new COM port will appear in device manager)

Then ... read current QCN (backup) via QPST / Software download (check attached picture) and via newly activated diag port.
After backup, write factory QCN via same program. You should get at least imei all zero's
or ar original one (not null/null when you type *#06#), and probably baseband should appear too
under settings/about phone etc.

If still nothing - flash NON-HLOS.bin (modem) from attached archive,
either via QPST (QFIL) or via adb from fastboot (you need unlocked bootloader),

command: fastboot flash modem NON-HLOS.bin

Needed files to download: A6020-L36_USR_S155_LAS_Modem+QCN_by_bRkA
archive pass: forum.gsmhosting.com

after all of that ... imei should appear, even all zero's, together with valid baseband.
After, is trivial to repair it via free tools (check my posts - I posted tool in some post under Lenovo section)

p.s. Posted modem and QCN is for version S155 (android 6.x), so put that version/twrp back first.

b.r.
Alex

guim · 06-06-2018, 18:01

Good day, friend, great step by step, I did everything as I quoted, I activated the diag901d port, I backed up the qcn then I put them on, but they continue with imei null, and it's only for those models, since all other models have always done this procedure and they come back, it's just the a6020L36 version that I can not repair even activating the diag port, it copies and at the time of playing the program installs but always nullo or when it comes back if I try to do the repair it returns to stay null, a support by team viewer or any other remote. if you can solve it I paid for the service, thank you and I await answer

ahmerrafiq30 · 05-29-2020, 08:06

diag ENABLE CODE WITH ROOT *#*#13491#*#*

06-01-2018, 05:08	#1 (permalink)
guim Junior Member Join Date: Jul 2010 Location: brasil Posts: 21 Member: 1356835 Status: Offline Thanks Meter: 3	Lenovo a6020L36 imei null update ( ota ) Lenovo imei null after updating automatically, I am with more than 10 devices here, I got a working back up of a device working by xxx, and I tried to repair by xxx, xxxxx, xxxxx, xxxx box, xxxxx, xxxxx, xxxxxx and no success (efs, security, qcn and even the rom of what was working) at the time of putting on the other devices, of the error and those that did not, came back the original imei of the device however, no network is just emergency call, someone has managed to make a functional repair of this model, I tried also for the official lenovo program, please I need urgent help thankful Last edited by Brka; 06-01-2018 at 22:39. Reason: removed boxes

06-01-2018, 22:43	#3 (permalink)
Brka Moderator Join Date: Jun 1999 Location: Serbia Age: 48 Posts: 8,206 Member: 163 Status: Offline Thanks Meter: 7,785	There is some rom backup, but it's for custom recovery (TWRP). If you have ways to put TWRP into phone ... read more HERE There are stock rom's, but probably nobody will give it for free. A6020l36_USR_S042_1612091800_Q1021101.2_BMAIN_16G_ LAS - Android 5.x A6020l36_USR_S155_1702121800_Q1021101.2_BMAIN_16G_ LAS - Android 6.x Idea (with stock rom's) would be to downgrade, of course ... b.r. Alex __________________ Always press THANKS button if my post was helpful! Please DO NOT send me PM's for help, You can ask for help on forum Do not post THANKS posts - use thanks button ! ALWAYS use SEARCH button before posting!

06-03-2018, 17:20	#4 (permalink)
guim Junior Member Join Date: Jul 2010 Location: brasil Posts: 21 Member: 1356835 Status: Offline Thanks Meter: 3	everything was unknown in the network part, (baseband) but I already installed recovery and super user, and no success using the processes above me spoken. and yes already tried to put, the rom 5.1 that is the downgrade, and the 6.1 that is the current, but I did not succeed, can you give me one more tip? and thanks to you for answering the topic, the first time I have a moderator ... the rom passes normal however the devices continues with the imei null undocks, or when the original imei returns continued without giving network, Last edited by Brka; 06-03-2018 at 23:41. Reason: merged

06-06-2018, 18:01	#6 (permalink)
guim Junior Member Join Date: Jul 2010 Location: brasil Posts: 21 Member: 1356835 Status: Offline Thanks Meter: 3	Good day, friend, great step by step, I did everything as I quoted, I activated the diag901d port, I backed up the qcn then I put them on, but they continue with imei null, and it's only for those models, since all other models have always done this procedure and they come back, it's just the a6020L36 version that I can not repair even activating the diag port, it copies and at the time of playing the program installs but always nullo or when it comes back if I try to do the repair it returns to stay null, a support by team viewer or any other remote. if you can solve it I paid for the service, thank you and I await answer Last edited by ...:::::NP™:::::...; 05-29-2020 at 08:37. Reason: Contact number has been removed

06-01-2018, 22:34	#2 (permalink)
boganice No Life Poster Join Date: Jul 2001 Age: 42 Posts: 775 Member: 5184 Status: Offline Thanks Meter: 246	Baseband is OK, or unknown?

05-29-2020, 08:06	#7 (permalink)
ahmerrafiq30 No Life Poster Join Date: Apr 2015 Location: usa Posts: 671 Member: 2372074 Status: Offline Sonork: 100.1663814 Thanks Meter: 167	diag ENABLE CODE WITH ROOT ##13491##