Try latest nightly build. Post a log from it, in case it doesn't work.
This is the most relevant thread about the problem:
Post
RE: [RPi5] Problem with HiFiBerry DAC
[…]
RPi folks recommend to store the name of the overlay in the eeprom, not the actual overlay itself, to avoid kernel version issues.
Unfortunately Hifiberry did the latter (and OFC the overlays became incompatible with RPi5) but fortunately this could be fixed up with hat_map entries (see commit https://github.com/raspberrypi/li…fdda902104650b3) so the hifiberry cards should work fine now without any config.txt trickery.
so long,
Hias
RPi folks recommend to store the name of the overlay in the eeprom, not the actual overlay itself, to avoid kernel version issues.
Unfortunately Hifiberry did the latter (and OFC the overlays became incompatible with RPi5) but fortunately this could be fixed up with hat_map entries (see commit https://github.com/raspberrypi/li…fdda902104650b3) so the hifiberry cards should work fine now without any config.txt trickery.
so long,
Hias
HiassofT