[johnnym]

I was looking at that post, but that rom is bigger than one  that i have. Twice as big, and it just won't fit

I wanted to point you to https://web.archive.org/web/200807191230...troms.html, but it looks like they never had the ROM code for the SPARCstation LX available (actual archive of downloads here: https://archive.org/download/sunshack_bootroms).

May I ask why you need a newer firmware for yours? I have two SPARCclassics (similar if not identical to SPARCstation LX) and both work flawlessly with NetBSD (here's a log for one of them: https://dmesgd.nycbug.org/index.cgi?do=view&id=6962). Though I couldn't find what firmware level they actually have, seems like I didn't take notes and they're in storage currently.