I found many posts about his rainbow screen but none that exactly matches my problem :
I bought a raspberry 3B+ recently and downloaded latest hifiberry OS image. I flashed my sd card with RPI imager. And I have got an official raspberry power supply.
- No problem with NOOBS images : my PI boots with it.
- With Hifiberry : I've got a rainbow screen, even with the force_eeprom_read=0 in config.txt
No blinking led. I didn't connect the hifiberry card for the moment.
Does anyone has an idea ?