Hi
Please check this threads:
http://forums.computers.toshiba-europe.com/forums/thread.jspa?messageID=82016
Please note that memory upgrade depends on the notebook’s chipset.
You can check the chipset of the Sat Pro 4360 notebook and could search for details on the Intel page (I assume it’s Intel chipset).
Regarding booting from SSD;
I doubt a BIOS update would allows booting from external SSD… usually such old notebook were able to boot from CD, HDD or FDD only…