Nope, Ubuntu/Linux does it at runtime. Windows (and others possibly) doesn't support that so it must be loaded by the BIOS at boot time.
In theory communities like MDL can build a new BIOS image using new MC sources but this is not for amateurs (you'll kill the board) and for some random old Sony that's now very dated (the sale to JIP was ages ago) I doubt anyone will bother.
For Banking, credit cards etc. use Linux.