Show your R5 that you care for it by upgrading to 1.7.0. How do you think it feels being neglected?
Lol, thanks... In fact I had 1.6 downloaded last July! I don't know why I thought I was on 1.5.0...
They should make the camera recognize both a zip file, and the eosrv-vXXX-win directory, as places to look for a .fir file. (It'd only take a millisecond to search every single file for a *.fir file, too.) I had to make three tries to get the camera happy. (If I had read the English doc it might have been clearer but I thought the zip file itself was the "firmware download." When that didn't work I tried the unzipped download. Only then did I realize it just wanted one file. Don't make the user jump through hoops. Also, it's bogus to put a totally generic instruction file into firmware distribution, that's not specific to the R5 for instance, no mention of which menu the "format card" and "firmware" options are on. The final choice to update the firmware has yes and no buttons, with the no button pre-selected--that's fine--but the yes button is actually greyed out as if it's not a selectable option.
OK, so I'm at 1.7.0. If the camera catches fire or starts producing photos with lame compositions it's all your fault.