@azrobert, thank you for the advice.
The problem here is - it's a custom FW, uploaded to my device earlier by their support team. It's not listed as an official version. So, if I update it - it'll be lost. If I don't update it, my FW becomes obsolete in a while. Both options look unattractive to me
Unfortunately OBi in their latest FW release notes did not mention about fixing my problem (notes are very vague and indescriptive). But without the fix, I can't use their device in my environment - it simply crashes...
There should be a way to save custom make FW from device. Without it, it's like an Russian roulette...
I think I have no choice, but to take the risk and update FW, if there is no other options.