Updated latest kernel 04/11/2025-reboot recommended.Reboot failed-showed message No working init found Try passing init=option to Kernel.I have no idea what the correct thing to do is.
On the boot menu entry, press e to edit the kernel command line.
Try adding init=/bin/init or init=/lib/systemd/systemd to that line. I hope this work. If not you maybe need to use your live usb, chroot and repair from there.
If this work reinstall your kernels or rebuild your kernels.
Also, do you only have one kernel installed? If you have another like linux-lts, try that.
Try also the fallback option in the boot menu. Try everything 
Fallback option works.TY for help.
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That’s good! Now you can run your update again. Reinstall or rebuild your kernels. For good measure reinstall systemd. Reboot.