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Lenovo Tab P11 MT6789 - seriel number 00000000

Lenovo Tab P11 MT6789 - seriel number 00000000

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menshen
menshen
menshen
Enthusiastic Member
7
19-03-2024, 05:26 PM
#1



Hi. Accidentally, with the SP Flash Tool, I accidentally deleted various information from the tablet (IMEI, Serial Number, etc.) I managed to correctly restore IMEI (using Modem META). But I cannot correctly restore the serial number of the tablet. I tryed editing Barcode field from NVRAM, but nothing. ADB id appears 01234ABC, and info serial number from settings appears 00000000.

Could someone guide me how to get it?

It is a Lenovo Tab P11 2gen tablet, with a G99 processor (Mediatek MT6789).

Thanks in advance.
Gargoyle
Gargoyle
Gargoyle
Contributor
504
23-03-2024, 02:36 AM
#2
The serial number is not in nvram, it is in proinfo
What model is it?
TB350FU, TB350XU
pfrei
pfrei
pfrei
Enthusiastic Member
10
23-03-2024, 11:05 PM
#3
@Gargoyle: I think that depends on the OS. I have a Nokia 2.2 for testing purposes. When I was on Android 9, the serial number was shown in proinfo. But after I've upgraded to Android 11, proinfo was filled with zeros and another serial number was shown. I couldn't find it in any of the partitions. Maybe, it's encrypted now?
menshen
menshen
menshen
Enthusiastic Member
7
25-03-2024, 12:04 AM
#4
Thank you very much for your the answers.

I tried with SP Flash Tool to make a proinfo backup from a similar tablet, the TB350FU, but it gave me an error. With the TB350XU I could make that backup, but of course, that partition on my tablet was empty.

On the other hand, after a lot of effort I managed to unlock the bootloader and root it. Perhaps this will increase the chances of being able to correct the serial number. Perhaps file build.prop?
Gargoyle
Gargoyle
Gargoyle
Contributor
504
26-03-2024, 04:20 PM
#5



(23-03-2024, 11:05 PM)pfrei @Gargoyle: I think that depends on the OS. I have a Nokia 2.2 for testing purposes. When I was on Android 9, the serial number was shown in proinfo. But after I've upgraded to Android 11, proinfo was filled with zeros and another serial number was shown. I couldn't find it in any of the partitions. Maybe, it's encrypted now?

And after the upgrade, did the serial number agree?

I don't think it's OS dependent, it's factory default and doesn't change except that the device will be formatted when flashed which will erase most of the factory data nvram, proinfo etc
Gargoyle
Gargoyle
Gargoyle
Contributor
504
26-03-2024, 04:37 PM
#6
(25-03-2024, 12:04 AM)menshen Thank you very much for your the answers.

I tried with SP Flash Tool to make a proinfo backup from a similar tablet, the TB350FU, but it gave me an error. With the TB350XU I could make that backup, but of course, that partition on my tablet was empty.

On the other hand, after a lot of effort I managed to unlock the bootloader and root it. Perhaps this will increase the chances of being able to correct the serial number. Perhaps file build.prop?

Extract the proinfo.rar file

Edit the marked lines on the screen with the hex editor,
Flash in fastboot
fastboot flash proinfo proinfo.bin
This post was last modified: 26-03-2024, 04:40 PM by Gargoyle.
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pfrei
pfrei
pfrei
Enthusiastic Member
10
26-03-2024, 09:04 PM
#7
Well, in my case, I've lost my serial number when I've erased all partitions and flashed a Nokia 2.2 stock ROM (on Android 9). Then, I restored it by using MAUI Meta. I could see the number in proinfo.

Then, I've upgraded the stock ROM to Android 11 and suddenly got a new serial number. It's visible e.g. in *#06# and in ro.boot.serialno, but proinfo is completely empty now (filled with zeroes).

That's why I came to the conclusion that the number must be stored somewhere else now.

What do you think?
Gargoyle
Gargoyle
Gargoyle
Contributor
504
27-03-2024, 02:37 PM
#8
(26-03-2024, 09:04 PM)pfrei Well, in my case, I've lost my serial number when I've erased all partitions and flashed a Nokia 2.2 stock ROM (on Android 9). Then, I restored it by using MAUI Meta. I could see the number in proinfo.

Then, I've upgraded the stock ROM to Android 11 and suddenly got a new serial number. It's visible e.g. in *#06# and in ro.boot.serialno, but proinfo is completely empty now (filled with zeroes).

That's why I came to the conclusion that the number must be stored somewhere else now.

What do you think?

The serial number should not change with an update or upgrade, if it does, it is probably due to some error.

If you wanted to claim such a device, it would be rejected because the serial number would not match.

Isn't your new SN at the end of 012345?
pfrei
pfrei
pfrei
Enthusiastic Member
10
28-03-2024, 01:41 PM
#9
No, it doesn't start or end with 012345.

It looks as follows when I execute "getprop | grep serial" in the shell:
[ro.boot.serialno]: [C72C917xxxxxxxxx]
[ro.serialno]: [C72C917xxxxxxxxxx]
[vendor.gsm.serial]: [ HQ4010Txxxxxx]

The one from [vendor.gsm.serial] is the original one shown on the back of the device and can be retrieved / changed through Maui Meta. The other serial is a new one that was assigned when I've updated the stock ROM from Android 9 to 11.

And again, proinfo is completely empty, i.e. filled with zeros.

So, the question is still: Where are these numbers stored?
Soma1
Soma1
Soma1
Banned
3
29-03-2024, 07:42 AM
#10
(23-03-2024, 11:05 PM)pfrei @Gargoyle: I think that depends on the OS. I have a Nokia 2.2 for testing purposes. When I was on Android 9, the serial number was shown in proinfo. But after I've upgraded to Android 11, proinfo was filled with zeros and another serial number was shown. I couldn't find it in any of the partitions. Maybe, it's encrypted now?

It's possible that with the upgrade to Android 11, the serial number storage or retrieval method has been altered or encrypted for security purposes. Further investigation or contacting Nokia support might provide clarity on this matter.
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