Upgrading raspberry pi 4 kernel to 6.6

Hello, I would like to know if it’s safe to upgrade the raspberry pi kernel to version 6.6 as it can be done with raspi-config.

Why would you want to do it?

(if it’s working, don’t touch it)

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To have a more updated kernel, then more security? The default kernel for debian 11 on rpi is very old: 6.1.21-v8+ #1642 SMP PREEMPT Mon Apr 3 17:24:16 BST 2023 aarch64

I have no idea about pi hardware. Can’t advise to upgrade or not.
But I imagine you can make a snapshot of your disk, then test the upgrade, if everything goes as expected, why not. If not, revert to previous state.
You can ask the raspberry experts about it and give feedback

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I will search more about it online, and eventually post here any results. Thanks for the help anyway

In my previous server, working from a raspberry pi 4, I upgraded the kernel to a 6 version (to have at least the kernel at 64 bit) and it worked many months without any problem
(See Impact of the two recent security vulnerabilities on YunoHost - #2 by lnoferin)

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You mean you upgraded to version 6.1 or to version 6.6? It’s not clear if you moved from 5.10 or 6.1

I upgraded to 6.6 on a testing server and everything looks fine:
6.6.35-v8+ #1779 SMP PREEMPT Tue Jun 25 11:37:38 BST 2024 aarch64 GNU/Linux

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