TYAN THUNDER 2500 V.preliminary This is the first BIOS release for Thunder 2500 (S1867 V2.2) board. *This is for the LSI-1010 chip support (S1867 V2.2 board). Note : To flash, you need to have 3 files on the same floppy - 1. Phlash.exe (flash utility) 2. Platform.bin 3. The xxxx.rom (bios file) as listed in the table above.