Update: Cloudflare issues have been corrected. It is safe to update to 4.3.4
OP:
This is not official word from Denon, just a suggestion, as I have seen many people posting failed downloads/updates due to the Cloudflare outage affecting the internet.
Please refrain from trying to update your Engine hardware (especially over the air) at this time, due to the Cloudflare outage. You don’t want to chance a failed download corrupting your EngineOS
Not a bad idea, I updated it. But I wouldn’t trust even a download and update through flash drive, as the download to the computer could have issues since the downloads don’t have a # checksum that you can use to verify you didn’t get an incomplete or corrupt download.