UHK80: macro error incorrectly displayed during firmware upgrade

[mhantsch]

When I upgrade the UHK80 firmware through Agent with both halves connected through USB, this is what happens:

• Agent updates the right half.
• The right half starts running and processing macros.
• My $onInit macro takes a few seconds, as it does a countdown:

...
setVar count 3
loop:
setLedTxt 1000 leftStatus $count abbrev $count
repeatFor count loop
...

• While the right half is still running the countdown, Agent proceeds to update the left half.
• The right half produces an arbitrary strange macro error, e.g. "unknown command c" in the middle of the repeatFor c loop command
• The triangle display gets lit.
• Agent doesn't show the error message yet because it's busy doing the rest of the update.
• The update continues with the left half.
• The left half completes the update.
• Agent pops up the yellow banner and shows the strange macro error.

I can just clear the error, or reboot the keyboard, and everything will be fine without macro errors.

I don't know if the UHK60 is also affected by this; in any case, it would show up differently as the right half will be busy processing and forwarding the update to the left half.