Qsync not working after firmware update (older EOL devices)

[dunum]

For those who are still running 4.3.4 as their device does not support newer versions please be noted that if you install quite new 4.3.4.1632 Build 20210324 firmware update - you may loose Qsync functionality.

You can roll-back to previous firmware (dl from Qnap website, update manually) and this will solve the problem with the Qsync, but you will miss the latest firmware and whatever was in it.

Qnap will most likely not address this issue, as they do not support EOL devices, just release important security updates for them.

[dunum]

Same situation is with 4.3.4.1652 build 20210413
Solution is still to keep firmware from 2020, but great security risk.