iND-BIOS.5003.
Updating the BIOS might fix the problem, and it might not. Impossible to tell. However, before you start flashing your BIOS, try clearing the cache (E:\cache\) and the X, Y and Z partitions.
Run BIOS Checker on your Xbox - it will tell you your BIOS version.
You don't need 007 to flash. You can flash with Evox, or if your TSOP is a Winbond you have to use a Raincoat flasher. If you need a Raincoat flasher, try Eurasia, or you can copy the 007 flasher to your Xbox and run that from your file manager.
