Ok, from what I understand, the flashBIOS backup is saved to a region of size 256k. The flashBIOS is the interface that you see when you start in backup. This will allow you to flash your chip with a hacked bios, like x3.3294. When you set the banks to "on on off off off" you are reserving a space region of 1024k on your chip for the x3 to be saved on. What he was saying was that you can't save the x3 onto the backup region. This is why you set the banks.
I see the .iso image also. I really don't know what that is, I'll have to research it but it is not the bios you want. It's the wrong size. If you look at the home page, www.teamxecuter.com , on the right it will tell you the latest version of bios for x3 and it's size, 1024. So you have the correct one already.
The only thing that I can think of is you flashed the wrong bios with the banks set differently and it is, by default, trying to boot there instead off of banks 1 and 2. I really don't know, though. Just going by intuition.
I see the .iso image also. I really don't know what that is, I'll have to research it but it is not the bios you want. It's the wrong size. If you look at the home page, www.teamxecuter.com , on the right it will tell you the latest version of bios for x3 and it's size, 1024. So you have the correct one already.
The only thing that I can think of is you flashed the wrong bios with the banks set differently and it is, by default, trying to boot there instead off of banks 1 and 2. I really don't know, though. Just going by intuition.