CB2 Beta2 does not boot after armbian-upgrade or apt-get upgrade

```
Processing triggers for initramfs-tools (0.142+deb12u1) ...
ln: failed to create hard link '/boot/initrd.img-6.1.99-vendor-rk35xx.dpkg-bak' => '/boot/initrd.img-6.1.99-vendor-rk35xx': Operation not permitted
update-initramfs: Generating /boot/initrd.img-6.1.99-vendor-rk35xx
update-initramfs: Armbian: Converting to u-boot format: /boot/uInitrd-6.1.99-vendor-rk35xx
Image Name: uInitrd
Created: Tue Apr 1 12:22:24 2025
Image Type: AArch64 Linux RAMDisk Image (gzip compressed)
Data Size: 17089518 Bytes = 16688.98 KiB = 16.30 MiB
Load Address: 00000000
Entry Point: 00000000
update-initramfs: Armbian: Symlinking /boot/uInitrd-6.1.99-vendor-rk35xx to /boot/uInitrd
ln: failed to create symbolic link '/boot/uInitrd': Operation not permitted
update-initramfs: Symlink failed, moving /boot/uInitrd-6.1.99-vendor-rk35xx to /boot/uInitrd
renamed '/boot/uInitrd-6.1.99-vendor-rk35xx' -> '/boot/uInitrd'
update-initramfs: Armbian: done.
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
```

After issuing reboot the system does not boot, black screen only; I must re-image SD to restore function.