Is it possible to install firmware from another phone on android?

Question

Android

Let's say I have a phone from xiaomi (redmi note 5A) and I want to install firmware from redmi 8 or even from another brand (for example, samsung) on ​​it. Question: Is it possible to do this, or is it a bad idea?

Answer 1

Even under the condition of almost identical phones, where it seems to be the same hardware, there can be trite other batches and revisions of hardware and you will get a brick
However, people port from one hardware to another, literally from different devices, but still it’s better to google the GSI topic
Well, then dig : 4pda.to/forum/index.php?showtopic=892755

Answer 2

No, the firmware from Redmi 8 cannot be installed in any way, since the firmware will not be compatible with the hardware. There will be a bootlap (infinite download), but there is a much better way. You can install TWRP. This is a custom recovery with which you can make full backups of the phone, including the system. The main feature is that you can flash custom ROMs, and at the same time you are not afraid for the phone. It is easy to restore with TWRP in case of a brick. Also, dig around here
This is a verified w3bsit3-dns.com site. It's about Android. There are instructions, a knowledge base, and other useful information for Android users.
There is a custom firmware that is developed by the official community based on AOSP 12 (Android Open Source Project, Android version 12) for your device. I recommend using them.
Other useful information:
How to unlock the bootloader on XIAOMI, instructions ... or in video format from YouTube . It is necessary to do this in order to take your phone almost under complete control, and you can flash custom kernels, recovery, firmware.
How to install TWRP, instruction in text format or instruction in video format from YouTube
Link to the official version of TWRP for your model