UMIDIGI A7-A11, BISON and Power 5: Repair IMEIs, MEID and Google certificate

SpikeSpy · Post time 2022-2-12 05:41:20

Edited by SpikeSpy at 2022-2-12 05:45

My device (A9 Pro 6/128 2020) was showing only the IMEI 1. It didn't even identify the second chip even though it had two functional chips. I did the process mentioned here very carefully and got a successful answer. But in practice the second slot did not work again. It was only after reinstalling the stock ROM that the device recognized the second slot with the correct IMEI again.

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O meu aparelho ((A9 Pro 6/128 2020)) estava mostrando só o IMEI 1. Nem identificava o sengundo chip mesmo estando com dois chips funcionais. Fiz o processo aqui citado com bastante cuidado e obtive a resposta de sucesso. Mas na prática o sengundo slot não voltou a funcionar. Foi só após reinstalar a stock ROM que o dispositivo voltou a reconhecer o segundo slot já com o IMEI correto. Fica a dica.

seregagurecky · Post time 2022-3-12 14:37:22

hello, I restored imei and meid using the Meta program. But this did not help to remove the red inscriptions. what should I do?

seregagurecky · Post time 2022-3-12 14:41:28

hello, I restored imei and meid using the Meta program. But this did not help to remove the red inscriptions. what should I do?

Chucksmmadu · Post time 2022-3-27 07:02:43

Well, I used this to fix the red text issue. https://www.mediafire.com/file/y ... y+solution.rar/file I created an account just to reply this message

Marsboi · Post time 2022-4-3 15:22:15

skaldamramra replied at 2021-8-15 15:36
**** Author was banned or deleted ****

hello
where can I find modem settings for a9 128g 6771?

Joseph.Stewar · Post time 2022-4-16 00:11:31

super1234 replied at 2021-3-19 06:03
I have the same problem, my friend

did you manage to solve friend?
I did all the procedure but the only thing that doesn't solve it is the calls that I can't call or receive, everything works except the calls, there is no other method to solve this problem please

Joseph.Stewar · Post time 2022-4-16 01:39:15

skaldamramra replied at 2021-8-15 15:36
**** Author was banned or deleted ****

Hello brother, I updated my umidigi bison 2020 with 6gb/120gb to android 11 and I lost my imeis but I managed to replace it with another one, the internet works, it receives messages but it does not work in calls, when I change to 3g or 2g it loses the signal, it only works in 4g, I did your procedure but the calls still don't work, do you have another solution friend, thanks.

MysteryMan · Post time 2022-4-24 07:19:03

Edited by MysteryMan at 2022-4-24 07:47

Google Key (Certification/Certified Device) Issues!? Here's why!!!

When starting the flashing process with "SN Writer Tool", it looks in the firmware folder for a "CERT" (google attestation key/certificate) file ending with a ".dat" extension (shown below).

[04 18 06:37:57][INFO]<__kpha_init>: KPH: Begin. 4210
[04 18 06:37:57][INFO]<__kpha_init>: Load Config from "C:\SNWriter_1924-4.2.1-up-1.2.1-vturkey_A9Pro128\tee_stuff\kph_in\kph_env.ini" OK.
[04 18 06:37:57][INFO]<kpha_detect_server_mode>: version: 3.4.1
[04 18 06:37:57][INFO]<__kpha_init>: META Version: 3
[04 18 06:37:57][INFO]<get_cert_name>: certname: UMIDIGI_A9 Pro_mt6771.dat
[04 18 06:37:57][WARN]<local_read>: fopen(C:\SNWriter_1924-4.2.1-up-1.2.1-vturkey_A9Pro128\tee_stuff\kph_in\UMIDIGI_A9 Pro_mt6771.dat) failed: No such file or directory
[04 18 06:37:57][WARN]<__kpha_init>: UMIDIGI_A9 Pro_mt6771.dat not exist, certname_len : 25

Copy the Code

In my case it is looking for "UMIDIGI_A9 Pro_mt6771.dat" which is nowhere to be found in the firmware I downloaded (UMIDIGI_A9_Pro_1_128GB_V1-0_20210617)...

Unless "UMIDIGI", or @bensebacsi, provides these files to us I am unaware of any method to PROPERLY correct this issue...

If anyone has anything to offer/add, please do!

Krieger · Post time 2022-5-4 00:17:34

In a distraction, during the flash of my A7 Pro, I ended up forgetting to select the correct one, which firmware upgrade and ended up formatting. I did the IMEI recovery procedure and everything went well, but the mobile network signal did not activate as soon as it restarted, it took a while. Then it was active until I need to restart due to some crashes, after completion there is no more signal.
I did the modem flashing procedure described here, but it didn't work. What can it be?

Krieger · Post time 2022-5-4 11:03:04

I reinstalled the ROM and the signal came back but it took a few minutes. Since 2021, with the last updates of that year, I don't see 4G, only 3G. I even thought it was a network problem, but everywhere I go I never get 4G and I saw that many have this problem.
So I'm wondering if it would be good to flash the MD1_DB (MDDB_InfoCustomAppSrcP_xxx) and AP_DB (APDB_xxx) files from some ROM that doesn't have a problem. Can anyone confirm, or have a method to fix it?