OS 4.1 update 2 WOpain !

[nikos.rizos]

You need a PPC CPU to run 4.1 for classics and in your case for the 1200 a BlizzardPPC.

It's impossible to run 4.1 with a 030 or any 68K accelerator

The minimum requirements are:
  An Amiga 1200, 3000(T), or 4000(T) with Blizzard PPC or Cyberstorm PPC accelerator card
  Minimum 96MB memory installed on Blizzard PPC or Cyberstorm PPC
  Kickstart 3.0 ROMS
  IDE or SCSI CD-ROM drive (on Cyberstorm PPC) for installation
  1GB hard disk drive on IDE internal port or Cyberstorm PPC SCSI
  Amiga 880K Floppy Disc Drive