Thank you all guys!
Radioman for president.
LOL! this was a good one

Agree, but, as president, Radioman probably is targeted for an assassination
Well, that's why i don't candidate! Because I'm afraid of Chinese triad.

Seriously they should pay me for free advertising and years of free support for their crappy products. And also for adding Linux support to their devices. Right Mr. Wang?
This is the Linux support thread:
https://www.eevblog.com/forum/reviews/tl866-linux-support/Please post there any questions regarding to Linux/wine issues or related questions.
The Linux minipro project page is here:
https://gitlab.com/DavidGriffith/minipro/Many people contributed to this project including me.
Regarding to that
pile of stock of A model
they should donate them to poor students not to recycle them.
The new TL866II plus model suffers from the same disorder as his little brother. Bunch of people with bricked devices because of a failed firmware update. Why motherboard (an other) manufacturers will give you the firmware(efi/bios) on their website and you don't? afraid of cloners? We all know where those cloners are located! they are your own countrymen.
Please find and sue them but don't implement malicious(and shi..y) code to brick clones.
That shi..y code already bricked
genuine devices but thanks to my work those people restored their devices.
The history is repeating again! Bricked TL866II+ ! And because of this thread notoriety some people asks for help here or by PM me because the manufacturer don't even respond.
Do this firmware update A to CS works with 6.85 software version ??
Yes this will work with any version. But this depends if your device is genuine or not. Even if you have a clone you can but sometimes you can brick it. Not a big deal if you have some technicall skills. The restore procedure is quite easy.
There are two possible upgrade methods. The first one is very similar to how an arduino board works. There's a bootloader and you upload a 'sketch' (in our case the sketch is the A or CS firmware). Simple as that.
The second upgrade option is more risky and involves reflashing the whole chip. This is a two step process. First upload a custom firmware and then that custom firmware will erase and reflash the new bootloader. Then the normal firmware is flashed back.
I recommend you to try the first method first.
Happy firmware reflashing and may the force be with you!