Bios/Flash Help

[MikeTee]

According to the dealer I purchased my pre-modded Xbox from, it has a Chameleon chip and Xecuter2 Bios and he said the bios is flashable. Ok here's what comes up under Bios Checker.

Chip type: LPC based (SST49LF020)

512K Bioses
1. bios unknown (1165519480)
2. bios unknown (1165519480)

256K Bioses
1. bios unknown (213453721)
2. bios unknown (213453721)
3. bios unknown (213453721)
4. bios unknown (213453721)

My boot screen comes up with a blue Xbox log and it says Xecuter2 underneath. My questions are would the Chameleon come up in Bios Checker as SST49LF020? My second question is will I be able to flash it to 4979 or 4980 with Evox?

Any help appreciated.
Thanks, Mike T.