Should I change to Rpi 4B?

Yes i did (i think so).

Part of config.txt :

################################################################################

# End of default configuration

################################################################################

dtdebug=1

dtparam=i2c_arm=on

dtparam=i2s=on

# dtparam=audio=off

dtoverlay=hifiberry-digi-pro

################################################################################

dmesg

[ 5.105402] snd-rpi-wm8804 soc:sound: ASoC: CODEC DAI wm8804-spdif not registered - will retry

[ 5.107082] snd-rpi-wm8804 soc:sound: ASoC: CODEC DAI wm8804-spdif not registered - will retry

[ 5.241405] wm8804 1-003b: Linked as a consumer to regulator.1

[ 5.242057] wm8804 1-003b: Failed to read device ID: -121

[ 5.242252] wm8804: probe of 1-003b failed with error -121

I just do it but same issue

I found on this topic an explication of the issue https://forum.libreelec.tv

Da Flex

The same issue

The right topic i talked before : https://forum.libreelec.tv

Quote from og13

[ 5.242057] wm8804 1-003b: Failed to read device ID: -121

[ 5.242252] wm8804: probe of 1-003b failed with error -121

Remove the changes to config.txt and double-check if the card is plugged in correctly. The Hifiberry Digi Pro should be auto-detected and work out-of-the box.

If the error persists contact Hifiberry. The dmesg lines indicate there's a communication error with the wm8804 chip which could indicate a hardware fault.

so long,

Hias

HiassofT : I did all this hardware verification with multimeter.

All is ok.

The soundcard works with PI3B.

It seems to be an timing issue that let the W8804 in hw mode instead sw mode : https://forum.libreelec.tv/thread/21767-s…6343#post146343

Da Flex : I do it now