PinePhone won't boot

[LinAdmin2]

It could be you suffer from the dram clockspeed problem. Due to part variances, not all the pinephones have been able to handle the highest clock speed. Try stepping back one or two lower and see if it boots stabily. 552 seems stable for most people. Search 'dram clock speed' in the forums.

As far as I remember this is only a problem with earlier images which tried to overclock the system.