
Interestingly, Valve actually has separate recovery images in zip archives next to the bz2 ones. Inside the zip archives are regular .img recovery images. Thanks to your tip, I was able to get it to boot on my IODD 2531 simply by renaming .img to .ima and selecting it as the boot image on my device. SteamOS Recovery boots on my Deck!
I don’t know why, but Valve doesn’t restrict browsing their SteamOS Recovery repository. And that’s how I found out about the .zip archives. Interesting, huh?
Give it a shot on your IODD ST400. You probably don’t have to use that ‘goober’ workaround anymore. :)
I just got my 512 OLED in this evening. The chime on mine is also noticeably quiet. Personally, I preferred the chime loudness on the LCD model. Oh well.