Lenovo P2 (P2a42) IMEI repair - expert advice :) needed - GSM-Forum

DaltonT · 12-31-2019, 15:37

Hi!

I've been trying out many dongles to repair IMEI on this (admittedly old) lenovo phone.

So far, no dongles were successful in repairing the IMEI on Lenovo P2 (p2a42)

Perhaps someone more knowledgeable in this particular subforum can point me to a product that reliably works?

**Brka** · 12-31-2019, 19:39

In short (as possible)

- if phone is alive, unlock bootloader and install TWRP recovery
- Write Marsmallow ROM (ie: S062 version) (twrp firmware)
- check if baseband is okay under settings/about phone
- enable diag port via rooting (unlock bootloader, twrp, superSU etc.)
- write QCN file from THIS post
- reboot phone, imei should be there
- fix original imei via box or free tools (via diag port, or simply edit qcn file)
- if problems with 4G/LTE, erase modemst1, modemst2, rewrite qcn, fix imei.

p.s. Whole Process is a bit complicated, but you can obtain all info on google, 4PDA forum and lenovo-forums .ru

b.r.
Alex

MiRoOo · 12-31-2019, 19:53

Using this QCN backup you can repair your IMEI.
Too many guides for how to restore QCN files.
Diag code for your phone is ####8899#

Code:

P2a42_QCN

br, mshib0

DaltonT · 01-01-2020, 23:14

Hm, for some reason the QCN trick isn't working for me (I'm sure I did unlock bootloader, I did flash to Marshmallow ROM linked, I did make sure modem matches the marshmallow release)

There's a video that seems to suggest something called "EFS method" should be used

**Brka** · 01-05-2020, 22:18

Okay, let me tell you again...

You dont need ANY dongle/box to repair imei on this device.

- after flashing the device, power it on
- CHECK IF THERE IS BASEBAND info present under settings/about device (should be displayed)
- imei should be empty (*#06#)
- Write QCN via QPST/Software Download module
- reboot device, check imei again, should be like: 358957060996039

Crucial thing is, that BASEBAND must appear.

b.r.
Alex

DaltonT · 02-14-2020, 18:30

Quote:

Originally Posted by Brka

Okay, let me tell you again...

You dont need ANY dongle/box to repair imei on this device.

- after flashing the device, power it on
- CHECK IF THERE IS BASEBAND info present under settings/about device (should be displayed)
- imei should be empty (*#06#)
- Write QCN via QPST/Software Download module
- reboot device, check imei again, should be like: 358957060996039

Crucial thing is, that BASEBAND must appear.

b.r.
Alex

Hi Alex!

I suspect the subtle problem is that I want to CHANGE the imei on a phone with intact IMEI, and QCN restore does not over-write the old imei (so after reboot, the old imei returns)

Any pointers as to how to go about changing IMEI in case imei is initially intact (not empty)
?

P.S.:
currently trying out UMT dongle, no cigar so far...

DaltonT · 02-14-2020, 23:12

Oh, and I did try wiping modemst1, modemst2, then restoring the qcn. Still no cigar.

12-31-2019, 15:37	#1 (permalink)
DaltonT Junior Member Join Date: Sep 2019 Location: UA Posts: 19 Member: 2927780 Status: Offline Thanks Meter: 3	Lenovo P2 (P2a42) IMEI repair - expert advice :) needed Hi! I've been trying out many dongles to repair IMEI on this (admittedly old) lenovo phone. So far, no dongles were successful in repairing the IMEI on Lenovo P2 (p2a42) Perhaps someone more knowledgeable in this particular subforum can point me to a product that reliably works?

12-31-2019, 19:39	#2 (permalink)
Brka Moderator Join Date: Jun 1999 Location: Serbia Age: 48 Posts: 8,206 Member: 163 Status: Offline Thanks Meter: 7,784	In short (as possible) - if phone is alive, unlock bootloader and install TWRP recovery - Write Marsmallow ROM (ie: S062 version) (twrp firmware) - check if baseband is okay under settings/about phone - enable diag port via rooting (unlock bootloader, twrp, superSU etc.) - write QCN file from THIS post - reboot phone, imei should be there - fix original imei via box or free tools (via diag port, or simply edit qcn file) - if problems with 4G/LTE, erase modemst1, modemst2, rewrite qcn, fix imei. p.s. Whole Process is a bit complicated, but you can obtain all info on google, 4PDA forum and lenovo-forums .ru 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! Last edited by Brka; 12-31-2019 at 19:46.

12-31-2019, 19:53	#3 (permalink)
MiRoOo No Life Poster Join Date: Sep 2007 Location: Gizah/Egypt Age: 33 Posts: 660 Member: 594436 Status: Offline Sonork: 100.1657777 Thanks Meter: 952	Using this QCN backup you can repair your IMEI. Too many guides for how to restore QCN files. Diag code for your phone is ####8899# Code: P2a42_QCN br, *mshib0*

01-01-2020, 23:14	#4 (permalink)
DaltonT Junior Member Join Date: Sep 2019 Location: UA Posts: 19 Member: 2927780 Status: Offline Thanks Meter: 3	Hm, for some reason the QCN trick isn't working for me (I'm sure I did unlock bootloader, I did flash to Marshmallow ROM linked, I did make sure modem matches the marshmallow release) There's a video that seems to suggest something called "EFS method" should be used Last edited by Brka; 01-05-2020 at 22:11. Reason: removed dongle trash

01-05-2020, 22:18	#5 (permalink)
Brka Moderator Join Date: Jun 1999 Location: Serbia Age: 48 Posts: 8,206 Member: 163 Status: Offline Thanks Meter: 7,784	Okay, let me tell you again... You dont need ANY dongle/box to repair imei on this device. - after flashing the device, power it on - CHECK IF THERE IS BASEBAND info present under settings/about device (should be displayed) - imei should be empty (#06#) - Write QCN via QPST/Software Download module - reboot device, check imei again, should be like: 358957060996039 Crucial thing is, that BASEBAND must appear. 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!

02-14-2020, 23:12	#7 (permalink)
DaltonT Junior Member Join Date: Sep 2019 Location: UA Posts: 19 Member: 2927780 Status: Offline Thanks Meter: 3	Oh, and I did try wiping modemst1, modemst2, then restoring the qcn. Still no cigar.