I think that is very little.
This device is not even worth 50 USD in my opinion.
The first channel of my copy is unusable, the second one is okay, but since it has a lot of bugs, it is lying on my desk like a paperweight.
Not at the bottom of the closet, because it is a good example for me to buy a Fnirsi device only if I have already seen proof that the given device is stable and good.
On youtube, I don't understand why they mislead the masses, respect for the exception, Kerry Wong.
Few people test it normally, and many are obsessed with "Funcation"....
But I think this is just as bad as 1013D/1014D.
I didn't test the bug you brought up because I dropped the whole thing after a quick test of CH1.
Then when a normal update comes out, I'll take it out as soon as possible.
The update consists of two files, there is the APP and the FPGA.
What you find on the site is old, I don't think it will solve your bug, or at least you will generate more bugs with it.
My firmware: APP v1.7, FPGA V1.5