Bought in Octber 2021, eprom has 2.5.0 version. Using it to control ableton live performances at home for my cat.
Well build and quite heavy. To connect it to computer you need to buy a midi interface, I am using simple "doremidi" just like "Thomann Midi USB 1x1" which you can buy here too.
There are plenty of reviews of this device on youtube and also here on Thomann and I don't want to repeat it all, just point out what was not clear for me after these riviews before buying it.
It works perfectly with Ableton, each switch (except Exp pedals) can send cCCs and PCs and a Note and all at the same time which allows you to control much more than one device (if you really need it). Someone on youtube told that Ableton prefers midi notes over CCs. Actually both are possible but I switched to notes just to have same commands as my Launchkey MINI has. Programming FCB itself is a nightmare so I strongly recommend using a dedicated sofware. There are few of them and all have good youtube tutorisals, its up to you wchich to chose. If you know what a midi is and what you actually want to configure it will not take you more than a day so don't be scared by complexity of a manual.
Switch 1 and 2 at the rear panel are the exits to switch presets of your amp via standard jack cable, they are no designed to connect additional pedals etc., but you can actually expand your FCB by connecting additional midi controller (any and not only a pedal) to MIDI IN and instruct FCB to merge incoming signals from its own signals ant send them all thru midi OUT.
Switches are pretty tight and quiet, much better than round metallic click clack buttons cheap pedals have. But there is a lack of feedback so I am not sure which moment exactly the pedal is pressed.
Sadly UP and DOWN buttons are not programmable, they are not sending any midi comands at all. Probably next UNO chip will have this option, they have it on a wish list according to their website. I would love to use it to switch scenes.
That's all for the less than a month use. Due to low price I round up my rating to 5 stars. If you need it it's worth buying it. Thnk you Thomann.