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Kernel update from 4.19 to 5.10

Posted: 24 Jan 2023, 12:04
by hopfalgebras
Hello,
I want to update my own image based on the following KUNBUS image 2019-03-14-revpi-stretch in order to be able to use it on the CM4S.
I loaded the image on a CM3+ (Article No.: 100304) and I tried the procedure described on the tutorial "Migration to CM4S based devices" https://revolutionpi.com/tutorials/migration-cm4s/
I followed point 2 of the tutorial and after the update procedure I was able to update the kernel up to version 4.19.95 as it tells me it is the newest version and no further versions are available.
What is the reason why I cannot install the newest 5.10 version of the kernel?

Re: Kernel update from 4.19 to 5.10

Posted: 26 Jan 2023, 23:57
by nicolaiB
Is there a special reason for using the old stretch image? If not I would strongly suggest to use Buster, which has out of the box support for the core s (since 2022-08).

Nicolai

Re: Kernel update from 4.19 to 5.10

Posted: 30 Jan 2023, 09:47
by hopfalgebras
This Stretch image include some software and code that were developed to fulfill the requirements of a specific application.
As I do not have the know how to rebuild the full application starting from Buster then I think the only way is to update the kernel.
In the migration document the Stretch image is listed as upgradable to kernel 5.10, isn't it?

Re: Kernel update from 4.19 to 5.10

Posted: 29 Mar 2023, 10:32
by p.rosenberger
The kernel is not the only component which needs support for the CM4S. If you use a Stretch based image you have moste likely a outdated bootloader as well.

Best regards
Philipp