IMEI restauration

Using /e/OS Settings
1

The e/OS build I use (e_tissot-userdebug 10 QQ3A.200805.001 eng.root.20220528.000306 dev-keys,dev-release) shows IMEI 0 and IMEI SV 00 for the 1st SIM and unknown for the 2nd SIM. While the phone works with both SIMs (voice and data), I still stumble on issues because of this: repair services don’t accept the phone, I don’t have data when rooming in some countries and no voice service in other contries.

Is there a way to restore the original IMEIs, at least for Xiaomi Mi A1?

From what I’ve read, is not uncommon for e/murena users to have their IMEI lost after flushing this OS, but is there a guide to recover these codes or tools to restore them (eg. extend “developer options” with support for this legal action if the owner has written the codes before flashing/resetting these fields)?

2

I do not know of such a guide.

Before first flashing a device is is a good idea to take a backup of the efs folder/partition. The method is device dependant.

I am fairly sure there are one or two Xiaomi guides. I think I took a backup while waiting for my 14 day lock to expire, but any notes are now gone, I’m afraid.

It is always wise in your position to take this very gently, the efs folder/partition may not actually be corrupted, just not fully connected, idk.