That was 3 months ago.
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My phone is Redmi Note 10 Pro (global version) running a custom ROM (AOSP based).
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You can install KSU on non-GKI devices: https://kernelsu.org/guide/unofficially-support-devices.html. I was probably using this one, but there are multiple KSU kernels available for my device and you can probably find some for yours in the telegram groups.