Pi3 stuck on rainbow screen after a kernel downgrade

Question

I've a Raspberry Pi 3 running Raspbian with the kernel 4.4.38-v7+. I want to downgrade to version 4.1.X to have full support for xboxdrv.

I used the script rpi-update:

apt install -y rpi-update rpi-update ddacb5e91eb5c67bb39df99182b071d7199e7a74

After that I got the rainbow screen. I tried with the boot_delay=1 but didn't work.

There is an specific kernel release to use with Pi3? or Did I forget an step? The power supply provides 20 W. Thanks in advance.

Answer 1

You have broken your installation. rpi-update can install different kernels, although it is definitely NOT a beginner tool.

There are many changes in the latest Raspbian, which are dependent on the 4.4. kernels, so this is unlikely to be usable.

If you REALLY need an old version of the OS, I suggest you restore from a backup, or do a clean installation using one of the releases in http://downloads.raspberrypi.org/raspbian/images/