UMIDIGI F1, F1 Play and S3 Pro: Repair IMEIs, MEID and Google certificate

bencebacsi

UMIDIGI F1, F1 Play and S3 Pro: Repair IMEIs, MEID and Google certificate

after full flash format or flashing an incompatible or badly assembled custom ROM

Updated: 2021, September 24

This guide is about how to repair your lost IMEI numbers and Google certificate on UMIDIGI F1, F1 Play and S3 Pro with a special version of MediaTek SN Writer tool, using a PC running Windows 10 OS with administrator rights.
Please note: By formatting the flash chip of your UMIDIGI device or installing a non-factory system software (''custom ROM'') on it, you instantly lose both your manufacturer's and seller's warranty. Therefore, the solution provided here does not offer further support, regardless of you are able to successfully use it or not.







What you need:

• Modify Windows hosts settings
• VCOM drivers: Windows 10 can automatically install it. Please make sure that your Windows is logged in with administrator rights and your computer has a working internet connection when first time connecting your phone.
• SN Writer TEE Tool with vturkey tool - Select the version that fits your phone:
  

F1 and F1 Play EU: SNWrier_1828-4.0.0-vturkey_F1_EEA.rar
F1 and F1 Play non EU: SNWrier_1828-4.0.0-vturkey_F1_nonEEA.rar
S3 Pro EU: SNWrier_1828-4.0.0-vturkey_S3Pro_EEA.rar
S3 Pro non EU: SNWrier_1828-4.0.0-vturkey_S3Pro_nonEEA.rar

EU versions:

Dual circle home button

Non EU versions:

Single circle home button


Let's get started step by step
(the driver installation process will be skipped in this tutorial since a Windows 10 PC connected to the internet can automatically install the compatible drivers)
You have to power off your phone before Step 8.!

• Brows for the C:\Windows\System32\drivers\etc\hosts file and open it in a text editor.
  Add 116.62.230.138 pl.trustkernel.com to the end of the list of hosts, then save the hosts file. If you are not allowed to save it locally, first save it in an other location, then copy the new one by overwriting the original file.
  
  
• Extract and open the folder of SNWrier_1828-4.0.0-vturkey, then open the application by double clicking SN Writer.exe.
  
  
• Click the System Config button, then select all items that you can see checkmarked below.
  
  You may uncheck the IMEI and MEID Options and keep only one item (as your choice) selected in the Write Options if your only target is to recover your Google certificate.
  
  
• Click the Save button.
  
  
• Enable AutoGen as shown on the picture below, then select the same items you selected on the System Config page except IMEI, since you need to enter your original IMEIs and MEID manually. (BT and Wifi addresses will be auto generated)
  
  .
  .
• Click the Start button.
  
  
  
• In the pop-up window, enter your original(!) IMEI_1, IMEI_2 and MEID numbers, then click OK.
  
  .
  .
• Connect your (powered off) phone to USB, without pressing any buton.
  The writing process will start automatically while your phone is switching into META mode.
  
  Troubleshooting: If the process gets stuck at this point what the screenshot shows above (Start searching kernel...), disconnect the USB cable for a few seconds, then reconnect it and the process will continue. If the flashing process still fails, start again the flashing but leave your phone connected. Press and hold the power button until the flashing process starts, then release it.
  
  
  
• After the writing process finished, you get the following screen, reporting the successful operation, and your phone automatically switches into charging mode.
  

Now you are DONE and may power on your phone.
Congratulations!


In case of a bad connection, not properly installed drivers or if something other trouble happens, you get the following screen.

Check your USB cable, use another USB port, when the phone switched to META mode, check your Windows device manager to see if a new serial port is correctly installed.

After reboot your phone, check the new IMEI and MEID numbers in Settings --> System --> Advanced --> About phone.


All the screenshots are captured and the guide is written by me for UMIDIGI users. Unauthorized copy of this content is prohibited. Please let me know if you find errors or missing info.
Thank you, bencebacsi

bencebacsi

kp25 replied at 2020-2-9 20:01
has anyone found a solution yet

This tutorial has been updated, please check it again. You need to edit the Windows hosts file.

basketmind

THANK YOU for this thread.
I tried it about ten times and it didn't work.
Always got this annoying "TEE PL failed with -19"-message (like others here too). Don't know what this means. But then I looked for another SN-Writer-version and so I installed the latest one (v1.1916.00) and SURPRISE...suddenly it worked and I could read "PASS", yeah.
Now I can see my real IMEI again on my phone but the red annoying Tee and Google text is still on my screen.
Asking myself if it's due to missing one number in my MEID (it just has 14 instead of 15 numbers because you just can insert 14 with SN-Writer).

So next step: Get rid off this horrible big letters and don't stop trying...
Wish me luck! ;)

Cristallx

Put only the first 14 characters in. The 15 character is a check digit and you don't need to put in. Later when you restored you MEID you gonna see you have again the same 15 characters.

lost_youth

Hello. before, I could manage to change IMEI by secret codes such as *#*#08#*#* . but I can't change on my new F1 Play ( non eu version ). This secret code works out,it opens the page where I can write down the IMEI numbers.  but although I save and it says that it succesfully change the IMEI, it doesn't change in fact. Do you know any other way for F1 play to change IMEI without programme but through secret codes?

Gigo

Hi guys, finaly I was able to fix the annoying red letters on umidigi S3 pro.
First you open notepad and run as admin. In notepad Click all  files, files, open, pc, C drive, windows ,system32 ,drivers, etc, host. Open  that file and add new host at the end of the line. (116.62.230.138     pl.trustkernel.com) and save it. Extract the SNWrier to the desktop, inside de SNWrier folder extract the firmware. Open the folder SNWrier then open the application by double  clicking SN Writer. Click the system config check imie, bt address, wifi address, meid and dual IMEI. Click MD1_DS  choose desktop SN Writer folder open firmware and add MDDB.META_MT6771_SOO_MOLLY_LR12A____ now click AP_DB choose APDB_MT6771_SO1_W1921 from the firmware. In Log dir select desktop SNWrier. Click save bottom. Add your IMEI and meid #
Turn you phone off and press Start. Bingo !!!!.

SR10638

I know this is an old post, hoping the original poster is still active. Anyone have any ideas of obtaining the IMEI information for my F1 Play? Got wiped using SPFT and showing the TEE/Google red banners. I see the tool here for reinputting them into the device, but I just don't have the numbers recorded anywhere. I never backed them up, and lost the box years ago. I figure I'm out of luck, but just wanted to ask if somebody with inside knowledge may know if there still stored internally or be able to pull via a tool by serial?, thanks for any ideas!

Mitchell

Muchas gracias , costo un poco pero funciono despues de probar un rato , muchas gracias amigo por esta gran herramienta.

scotland99

It worked perfectly, except I suggest a change to instructions.
After stage 5 where you enable autogen, another window pops up before you get a chance to hit start. I had to tick, or select whatever I was going to input at stage 7.

Then go to instruction 6.
Then 7.
Hit start.
Restart phone, immediately .
RED TEE Activation, and Red Google Activation message is gone.

KimLe

Finally I make it Pass. Make sure ( use WordPad to modified it)  the file hosts when add to end off the file 116.62.230.138 pl.trustkernel.com
look like this:
# localhost name resolution is handled within DNS itself.
#        127.0.0.1       localhost
116.62.230.138 pl.trustkernel.com

After replace Host file open it to see if it has the # in front of the last line, if it has "#" it is not good and will fail when flashing.

hUBSIb

basketmind replied at 2020-1-8 22:43
Edited by basketmind at 2020-1-8 23:03  

THANK YOU for this thread.

I also formatted and flashed accidentally the ROM. When trying to recover the mishap, I got fail with TEE-PL error 19 numerous times. Although I bought the F1 with European (EEA) ROM I have tried then the SN Writer for non European ROM. It worked the right away.
Many people who buy their F1 in Europe will get actually non European Google licensed devices with EEA ROM through the various Chinashops in Europe. So the licensing server will check for EEA credentials on the device. If not found properly SN Writer will deliver error 19 and fail message. If non European version of the SN Writer is used you should get a PASS message. I also used in addition the APDB file from the EEA version for compatibility purpose.
Most likely reason: Licensing fees to Google are probably different (lower !?!) for Non European devices. As usual it´s all about the money. That´s why the identical phone is about 50 Euros cheaper in Asia.

mikel_reborn

THANK YOU! THIS REALLY HELPED ME

matoseyems

My PC already installed the drivers after flashing the fone, so do I still need the internet connection to solve the red TEE and Google on my screen.

matoseyems

xeesuus replied at 2020-3-27 03:13
I just got it by following the @bencebacsi tutorial:
windows 10 admin user
sn write TEE version

Please I need ur help, do I need internet connection to solve this issue

matoseyems

I am having same problem here, i want to ask few questions to solve it,

Must my pc be windows 10

Do i need an internet connection to do it

and what is the easiest way to solve it battling it since 5 days now

plz help