Prohibited sign unable to update to 14.7

The hack in question was installed new with 14.6.1 recovery and the installation was successful, the hack has been running fine for like a week.

Today we tried to update to 14.7 using macOS system update. OC and all kexts was updated to newest (1.0.2) earlier today and everything was fine after OC update. The macOS update was first shown as ~800MB, but then it failed with the message box "failed to prepare the software update" which does not really say anything, then the update suddenly became ~13GB. We managed to download the update but after reboot and selecting "macOS Installer" we were blocked by a prohibited sign.

We don't have the faintest clue where things went wrong. The hack in question can still boot into 14.6.1 and it appears like the update has never happened.

Any ideas? Is there any other way of updating macOS while keeping all file/programs intact?

submitted by /u/zzz09700
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