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[GUIDE] solve INVALID IMEI problem for MTK chipsets, mt6575, mt6577, mt6515 .........

this guide is only for phones who has problems with IMEI number on mtk chipsets....
warning: not for phones with valid imei[undamaged], if tried may permanently remove your IMEI.
MOD Edit: Please do not discuss changing/repairing IMEI numbers. Changing the numbers can be illegal in some places and changing the IMEI number is often used for reselling stolen devices.
HIT THNX IF U LIKE............

Thank you
I am about to try!! thank you for the information!

thnx
thnx
it worked for me...:good:

not working mt6577 note2 clone

i've tried on my sister's phone, and its worked..:thumbup:
Sent from my GT-S5300 using Tapatalk 2

bro post d 2nd method

viki_os said:
bro post d 2nd method
Click to expand...
Click to collapse
Hi,
I have a htc one x clone, but where i can find the emai, the back cover is not removable.

Post
Post New method please.

New method please.
waryamsoomro said:
Post New method please.
Click to expand...
Click to collapse
New method please.

Im having unable to send

this option dosen't work...
hy,
I have a problem with a chinese dual sim it's a STAR B97 MTK 6575... AFTER A FACTORY RESET , i got a invalid imei.
The problem that I have with your first solution is that after I type the code for the Engineer Mode, in all of those options I dont have "CDS information"... ergo, I cant do nothing.. What do you advise next? p.s. how do I flash my phone stock firmware?
thx a lot!!!

Will this work for MT6589
Please let me know can I use the above method for Mediatek 6589 newly launched chipsets.

snadeemshaikh said:
Please let me know can I use the above method for Mediatek 6589 newly launched chipsets.
Click to expand...
Click to collapse
try bro if u have that mtk engineering mode in ur phone it should work.......

fmarian said:
hy,
I have a problem with a chinese dual sim it's a STAR B97 MTK 6575... AFTER A FACTORY RESET , i got a invalid imei.
The problem that I have with your first solution is that after I type the code for the Engineer Mode, in all of those options I dont have "CDS information"... ergo, I cant do nothing.. What do you advise next? p.s. how do I flash my phone stock firmware?
thx a lot!!!
Click to expand...
Click to collapse
which version of android are u using......???
check again to see anything related to radio information.....
don't know abt ur stock firmware........

Any permanent solution for this problem???

I have the new X920 (butterfly clone) MTK6589, and I have this invalid IMEI issue. I can manually get this fixed through your guide entering the engineer's mode. But everytime I reset to factory settings, the invalid imei error comes up. Is there a way to fix this permanently?

alifuk said:
I have the new X920 (butterfly clone) MTK6589, and I have this invalid IMEI issue. I can manually get this fixed through your guide entering the engineer's mode. But everytime I reset to factory settings, the invalid imei error comes up. Is there a way to fix this permanently?
Click to expand...
Click to collapse
i'm also suffering with the same problem but i did not find any perm sol.
i think
it can be done if you have any previous backups of data partition before the invalid imei problem occured.

no imei restore
hi
i have a mtk 6577 youpu U6 which has 4.1.1 JB, i factory reset my phone and lost the imei number and i have tried restoring it with titanium bk up but no luck iv tried using the mkt engineer tool to restore my imei and after the reboot it still says invalid imei. also i have the option of going into the CDS and radio and typing in the imei manually however when i hit the send command button it tells me on the screen command no sent iv been trying for 4 days to get my imei number back can you help?
thanks mate

spyki007 said:
i'm also suffering with the same problem but i did not find any perm sol.
i think
it can be done if you have any previous backups of data partition before the invalid imei problem occured.
Click to expand...
Click to collapse
it is okey to use other backup with the same phone and restore it in the phone with invalid imei?

[MT6572 Primo F2] SIM not detected, pttycmd1 not found, NVRAM empty

I 'whole formatted' my MT6572 based Walton Primo F2 phone with SP Flash Tool.
Then I flashed the official firmware of this phone with SP Flash Tool.
Now the phone works fine but it does not detect SIM.
Also, the IMEI is shown as 'Invalid' for both SIM slots when I input *#06#.
When I try to fix IMEI from MTK Droid Tools it shows 'ERROR : pttycmd1 device NOT found!'.
Also, MTK Droid Tools shows 'Baseband v: -----'.
I am sure the problem is that when I formatted the phone it wiped the NVRAM region too.
So the phone has no baseband or radio files right now.
Although, WiFi still works perfectly.
Now the official firmware of Primo F2 does not contain any nvram.bin file.
It does contain a BPLGU file but I can't seem to modify IMEI with SN Write Station or Maui META etc.
Probably SN Write Station and Maui META etc. only modify IMEI when baseband or radio files are already present on the phone.
So I think the only way out for me is to flash a nvram.bin with SP Flash Tool.
Any ideas whether I am on the right track or not?
If I am, then how can I get nvram.bin file for my phone?
Can it be generated from BPLGU file somehow?
As you people can see that I have tried a lot of things, so please suggest/advise accordingly.
Any help would be appreciated

have you got rooted sir ?
if you have, you must press ROOT button first to change IMEI and restore NVRAM.bin from your stockROM

what was d way out eventually
Hello. I'm stuck with the same problem too. Thought mine is with a tecno f7. I was wondering how you finally got to fix urs. Please share. Somebody. Anybody. Thanks

Any Progress on this issue ?
Hello threatalive/buggiemannie
I am facing EXACTLY the same issue for a lesser known brand (iOCEAN). Did you guys resolved this issue earlier? Any help, greatly appreciated!!!
Thanks

[MT6572 Primo F2] SIM not detected, pttycmd1 not found, NVRAM empty

I 'whole formatted' my MT6572 based Walton Primo F2 phone with SP Flash Tool.
Then I flashed the official firmware of this phone with SP Flash Tool.
Now the phone works fine but it does not detect SIM.
Also, the IMEI is shown as 'Invalid' for both SIM slots when I input *#06#.
When I try to fix IMEI from MTK Droid Tools it shows 'ERROR : pttycmd1 device NOT found!'.
Also, MTK Droid Tools shows 'Baseband v: -----'.
I am sure the problem is that when I formatted the phone it wiped the NVRAM region too.
So the phone has no baseband or radio files right now.
Although, WiFi still works perfectly.
Now the official firmware of Primo F2 does not contain any nvram.bin file.
It does contain a BPLGU file but I can't seem to modify IMEI with SN Write Station or Maui META etc.
Probably SN Write Station and Maui META etc. only modify IMEI when baseband or radio files are already present on the phone.
So I think the only way out for me is to flash a nvram.bin with SP Flash Tool.
Any ideas whether I am on the right track or not?
If I am, then how can I get nvram.bin file for my phone?
Can it be generated from BPLGU file somehow?
As you people can see that I have tried a lot of things, so please suggest/advise accordingly.
Any help would be appreciated

MEEEEE TOOOO...
Did u got any solution?

pttycmd1 device not found
threatalive said:
I 'whole formatted' my MT6572 based Walton Primo F2 phone with SP Flash Tool.
Then I flashed the official firmware of this phone with SP Flash Tool.
Now the phone works fine but it does not detect SIM.
Also, the IMEI is shown as 'Invalid' for both SIM slots when I input *#06#.
When I try to fix IMEI from MTK Droid Tools it shows 'ERROR : pttycmd1 device NOT found!'.
Also, MTK Droid Tools shows 'Baseband v: -----'.
I am sure the problem is that when I formatted the phone it wiped the NVRAM region too.
So the phone has no baseband or radio files right now.
Although, WiFi still works perfectly.
Now the official firmware of Primo F2 does not contain any nvram.bin file.
It does contain a BPLGU file but I can't seem to modify IMEI with SN Write Station or Maui META etc.
Probably SN Write Station and Maui META etc. only modify IMEI when baseband or radio files are already present on the phone.
So I think the only way out for me is to flash a nvram.bin with SP Flash Tool.
Any ideas whether I am on the right track or not?
If I am, then how can I get nvram.bin file for my phone?
Can it be generated from BPLGU file somehow?
As you people can see that I have tried a lot of things, so please suggest/advise accordingly.
Any help would be appreciated
Click to expand...
Click to collapse
same problem arived for me but my chipset is MT6598T...
please help anybody...

I did same with my phone its also mtk6572..lost imei and everything..but fixed it using imei and s/n writing tool..wrote imeis..got everything fixed..
Sent from my Micromax A58 using xda app-developers app

daoodshah said:
I did same with my phone its also mtk6572..lost imei and everything..but fixed it using imei and s/n writing tool..wrote imeis..got everything fixed..
Sent from my Micromax A58 using xda app-developers app
Click to expand...
Click to collapse
i also tried the same process and many more....
but there is no use....

u dint succeded??

Hi friends! download chamelephon from play store and easily change your imei....
i also had this problem which was solved by chamelephon

Lenovo Legion Duel imei lost

hi i have proplem i flashed my phone with china rom i used qfil tool and checked on erase all befor download the imei lost and fingerpreant help me please what to do

I'm at the same situation like you. Unless member here willing to share thier QCN file for restore else you cannot do anything.

karrar.xx said:
hi i have proplem i flashed my phone with china rom i used qfil tool and checked on erase all befor download the imei lost and fingerpreant help me please what to do
Click to expand...
Click to collapse
I have the same probelm , did you fix it?

Hi, could you solve I have the same error without footprint and without imei?

i have found a solution for those who have lost imei after flashing or for those who want to change imei
here is the link to qcn file Enjoy i have removed my imei from it you can add yours by using this tool : https://mega.nz/file/LixWmY5T#ki4MXHtf0XKNovI7Iz3DQ8o2inrIPc3aTDgrwE_WpcI
QCN : https://mega.nz/file/yypwHQLC#96sIs97z_nkOSyn8U7U-1bRikrk1ipBDt2HFcXb1sLY
use the below guide to restore imei and everything you have lost : https://forum.xda-developers.com/t/guide-backup-edit-and-restore-qcn-fixing-lost-imei.4101611/

Question Asus Rog5 imei Null No network

I make a software by QFIL - after that imei null
I Have The Box with IMEI but I don't Know how to restore It ??
there any solution to fix the network?

You need to hex edit your IMEI into your QCN file and flash it back to the device. Also from QFIL.

Andrologic said:
You need to hex edit your IMEI into your QCN file and flash it back to the device. Also from QFIL.
Click to expand...
Click to collapse
Can you help me explain how to fix ?

alolbedoo said:
Can you help me explain how to fix ?
Click to expand...
Click to collapse
There are a lot of guides on XDA and elsewhere for the steps. However you need to first secure a working QCN file if you don't have a backup of your own and know the IMEIs in that file, so you can locate and overwrite with your own IMEI. Without that, you won't get far... I don't have a QCN file for this device on hand, maybe someone else here does and an share with you...

Andrologic said:
There are a lot of guides on XDA and elsewhere for the steps. However you need to first secure a working QCN file if you don't have a backup of your own and know the IMEIs in that file, so you can locate and overwrite with your own IMEI. Without that, you won't get far... I don't have a QCN file for this device by hand, maybe someone else here does and an share with you...
Click to expand...
Click to collapse
Thank you for your help I don't have a file QCN A search on the internet found a file name QCN-Patched
But I don't know how to use it

Andrologic said:
There are a lot of guides on XDA and elsewhere for the steps. However you need to first secure a working QCN file if you don't have a backup of your own and know the IMEIs in that file, so you can locate and overwrite with your own IMEI. Without that, you won't get far... I don't have a QCN file for this device on hand, maybe someone else here does and an share with you...
Click to expand...
Click to collapse
Is there a solution to unlock bootloader always Error11003

@Andrologic
Hey! I have been long trying to recover my nulled IMEI on ROG5. Every single tutorial I can find asks for a qcn file along with hex editor to input your box IMEIs. All follows up on my end until I use Qfil to restore a changed qcn file. It only writes till 2% and then phone goes into ramdump screen which means there's some kind of IMEI write protection on device or something like that. Because all other IMEI writing methods fail the phone to same RAM Dump screen. Desperate for some help.
Also there seems to be a problem getting diag mode to work on all stock ROMS. The only way diag mode works is by using ENG factory firmware on my ROG 5 which enables diag mode by default. The Asus_volte_su_fixed apk provided by @twistedumbrella Also doesn't enable diag mode on ROG5.

mhrs_1193 said:
@Andrologic
Hey! I have been long trying to recover my nulled IMEI on ROG5. Every single tutorial I can find asks for a qcn file along with hex editor to input your box IMEIs. All follows up on my end until I use Qfil to restore a changed qcn file. It only writes till 2% and then phone goes into ramdump screen which means there's some kind of IMEI write protection on device or something like that. Because all other IMEI writing methods fail the phone to same RAM Dump screen. Desperate for some help.
Also there seems to be a problem getting diag mode to work on all stock ROMS. The only way diag mode works is by using ENG factory firmware on my ROG 5 which enables diag mode by default. The Asus_volte_su_fixed apk provided by @twistedumbrella Also doesn't enable diag mode on ROG5.
Click to expand...
Click to collapse
Search results for query: AsusVoLTE
forum.xda-developers.com
The fix was to allow it to see your root, nothing more.

twistedumbrella said:
Search results for query: AsusVoLTE
forum.xda-developers.com
The fix was to allow it to see your root, nothing more.
Click to expand...
Click to collapse
ahh ok. So, basically we're stuck with a phone whose diag port can't be opened..

mhrs_1193 said:
ahh ok. So, basically we're stuck with a phone whose diag port can't be opened..
Click to expand...
Click to collapse
Dunno. I wasn't part of how that ended. I think it eventually got figured out.

mhrs_1193 said:
ahh ok. So, basically we're stuck with a phone whose diag port can't be opened..
Click to expand...
Click to collapse
This is not based on my own experience - but it looks like you may have access to write the IMEIs to this device via one of the ASUS Key partitions - in which case you may (or may not) be able to bypass writing QCN altogether.
I forgot the name of the guy who posted it, I believe it was under a CN>WW conversion guide - try to look it up and give it a try...

Andrologic said:
This is not based on my own experience - but it looks like you may have access to write the IMEIs to this device via one of the ASUS Key partitions - in which case you may (or may not) be able to bypass writing QCN altogether.
I forgot the name of the guy who posted it, I believe it was under a CN>WW conversion guide - try to look it up and give it a try...
Click to expand...
Click to collapse
The Imei part was mentioned in the very last part of thhis guide:
Repair ROG Phone 5 ZS673KS through edl firmware, no need to unlock Bootloader to modify COUNTRY CN to WW
These materials can only be used for ROG Phone 5_ZS673KS, and ROG Phone 5S_ZS676KS cannot be used. ROG Phone 5S ZS676KS Please see...
forum.xda-developers.com
Someone tried that for a seperate reason and apparently it changed their IMEI:
Repair ROG Phone 5 ZS673KS through edl firmware, no need to unlock Bootloader to modify COUNTRY CN to WW
These materials can only be used for ROG Phone 5_ZS673KS, and ROG Phone 5S_ZS676KS cannot be used. ROG Phone 5S ZS676KS Please see...
forum.xda-developers.com
Now, When I change the asuskey4 file, My IMEI do appear in the bootloader screen but when phone starts, it goes into a boot loop which stays even if I reflash the ENG firmware or stock firmware and ending in RAM dump screen.
Erasing the modemst1,modemst2 and fsg partitions from the phone does allow to get out of the bootloop. But shows Null Imei in the phone, while showing the IMEI in the bootloader screen.

So, apparently if I cannot restore the qcn file, There's no other way.
But Restoring QCN in ENG factoey firmware using QFIL or QPST only goes till 2% and then fails and phone goes to RAM Dump screen. Which apparently means that the phone has somekind of NV data write or IMEI write protection.

Writing QCN via Qfil goes till 2% then phone turns off and then status goes this 164% after which it shows that:
2022-05-05 08:53:19.685 Subscription ID:1 EFS File:/sd/mru001_ext_Subscription01, Function:NV_Tool_WriteNVsToMobile, Event:3 164%
2022-05-05 08:53:19.686 Done uploading the QCN file: C:\Users\mhrs_\Downloads\Compressed\GenericIMEI\patched.qcn, Sync EFS
2022-05-05 08:53:19.687 Done EFS Sync
2022-05-05 08:53:20.689 Reset Phone
2022-05-05 08:53:24.207 Restore QCN Fail:Restore QCN FailError in QTA.Phone.ModeControl :Error in setting phone mode to MODE_OFFLINE_D_F
2022-05-05 08:53:24.208 Finish Restore QCN
Attached is the log file from Qfil.
After this, phones goes into RamDump screen and when I hard reboot the phone, I can see IMEI changed from Null to 0 but still not my original IMEI :/

using qpst to restore only goes till 4% after which phone gets stuck in Ramdump screen.

Please help me to solve the network problem

alolbedoo said:
Please help me to solve the network problem
Click to expand...
Click to collapse
Searching for a solution myself.

mhrs_1193 said:
Searching for a solution myself.
Click to expand...
Click to collapse
Hi, Guys. I have the same problem since few days... Hope we will find a solution soon.

You cannot use others's qcn file to restore your imei. The imei store in fsg, modemst1, modemst2 also in your qcn file. If you use others qcn then they don't match each other, you'll failed to restore. The key: you need to empty the partition of fsg, modemst1, modemst2 in oder to restore other qcn file, but the system is read only so you cant do anything.