I have run OSMC on various Raspberry Pis for several years and carried out a number of installs and re-installs. I have now attempted a new install on a Pi4. Unfortunately, it will not progress beyond the initial ‘rainbow’ screen. I have tried three SD cards, including a brand new one. I have run checksum on the image file. I have tried a second Pi4, all without success.
I would be grateful for any suggestions as to what might be causing this.