Downgrading Android 13 to Android 11? (Only suitable for Qualcomm Snapdragon 662 chip)

Notice!
If your product is working normally, it is recommended that you do not change it! !
If your product is from PEMP or YeeHung, and it is a Qualcomm Snapdragon 662 chip, you can use the following method to downgrade Android 13 to Android 11.
Downgrade to Android 11 flashing software package:
drive.google.c...
If flashing causes the product to fail to work, we will not be responsible for compensation, but we can provide technical support!
[e-mail]

[@mistaondemand]

Don't do it guys. I tried this process to downgrade to android 11 because 12 and 13 wasn't working and now my unit doesn't work at all. And customer service is no help what so ever

[@Kentodessa]

I try this and brick my device....

[@3lacksky]

I did the downgrade and it actually works, but it seems, that the newer MCU version has some trouble on Android 11, where can I download an MCU version, that is compatible with Android 11?

[@pempcar]

You need to contact PEMP after-sales service team at [e-mail] to get the OEM file before it can work properly.

[@A2BMotorcycleTowing]

So no solution???