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I am new to this project. The project was developed in 2015 using Raspberry pi2 and a 7' touch display. The disk image works perfectly on Raspberry pi 2. I tried to flash the disk image to an SD card and load it to the latest raspberry pi4. But It is not showing anything on the display. If I load Rasbian OS to the pi4, it works.

Are there any changes or updates needed when we switch to the latest version? The programs are all done using Kivy I guess(Python).

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  • I think the Pi4 had an update to the boot process with new files required in /boot. These would not be present on your old Pi2 image. Have a search for updated Pi4 boot files.
    – joan
    Aug 18, 2022 at 20:45
  • The disk image we have is a compiled version. Is there any way to load old image and new OS together?
    – MKZ
    Aug 18, 2022 at 23:11
  • What do you mean by "compiled version", referring to the disk image?
    – NomadMaker
    Aug 19, 2022 at 11:44
  • This file if i flash on any sd card, will work in raspberry pi2, but it is not working in raspberry pi4
    – MKZ
    Aug 19, 2022 at 16:37

1 Answer 1

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The Pi4 was released on 24 Jun 2019 and requires Buster.
The only (reliable) way of upgrading is to perform a fresh installation.

You will then have to reinstall applications you use.

If you have a compiled program it may work, but this depends on what resources it uses. One thing for certain don't use a 64bit OS - which is almost guaranteed to fail. If I were doing this I would avoid Bullseye and use "Legacy" i.e. Buster.

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