Do updates replace bad system fonts
Hi
This is more of a question regarding how Apple Mac OS updates work.
I have an older late 2012 iMac running High Sierra. I have recently discovered one of the system fonts is corrupted; “Apple Color Emoji.ttf”. A recent upgrade of Adobe cloud has highlighted this problem, as all of their apps now crash. Adobe support spent 4 hours working on my computer today and determined it was a corrupted system font, which Font Book validation also indicates cannot be used. As I cannot replace the font in the system fonts folder (that I know of), and I can no longer use the Adobe software, I’m hoping someone may be able to help answer my query.
I don’t believe I can reinstall High Sierra as this is no longer available in the App Store, (unless there is a workaround for this), so my question is; if I upgrade to Mojave (which for my model is the only OS option available), will the upgrade replace any problem system fonts, ie will the ‘bad’ font Emojis be updated and replaced during the update? Or is my best option to erase the HD completely and install Mojave as new. You can understand this is not the best option as it means I’ll need to reinstall ALL my apps.
FYI: I am keen to upgrade my iMac, but waiting and hoping a newer larger screen iMac model will be launched this year.
iMac 27″, macOS 10.13