I got mine few days ago.
I've checked very easy the version - I think it was less than 10 clicks, but very fast ones. I had some problems with the 2 clicks to power on the display and until I clicked twice very fast it didn't work too. I've activated later the 2 Taps on the screen in settings to avoid this ( should be enabled by default )
Now, my impressions about this are mixed. Very good sound for the price, but very bad firmware ( as usual ). And I put the latest. This is my 3-rd player from FiiO and all of them had firmware problems. Some solved later, some... never.
Even the FAQ on their site is confusing.
For example -
https://www.fiio.com/newsinfo/262120.html - it says "Swipe from left to right ", even twice, but if you want to get the Lyrics screen you have to swipe from Right to Left. The OTHER Left FiiO !!
And.. surprise - if the song has no lyrics included, even if you have selected English language you get... something in Chinese.
There are problems with cue files. If in a folder with flac songs there is also a cue file, the first "real" song "01" doesn't appear in the list, but it appears when I scroll - taken from the cue file. But it will not play - none of the songs displayed from the cue files won't play.
Worst, if you have a full album flac - some big 4-500 Mb file and a cue file for it with the song, it will read the songs and display them, you can play from the first file, but if you want to skip to next song, or from start you choose another song than the first the M5 just stop working - need to press 10+ seconds on the power to close it. So I have to avoid any cue file or albums based on it.
Also I have to rename the songs of an album with their order number first so they can play in the right order. Even if the player gets some info from the file it seems it doesn't get the right song order.
Funny things too - FiiO Music seems to not see this on BT. Also on a windows tablet I had to install the USB drivers in order to get AptX - with the default drivers put by Windows it worked only in SBC.
And something I didn't succeed until now, even some reviews says it's possible - to connect an other USB DAC to it, on the USB port and play through it. Tried with a Sabaj Da2 and a FiiO X5II.