Updated to v7.2 (changelog in comments)

[TheZett]

Version 7.2:

• Removed 'factory firmware limitation', which prevented certain PSPs from being downgradable at all or limited them from being downgraded to certain firmwares they theoretically support.
• Chronoswitch now detects your PSP's motherboard alongside its model and allows flashing all firmwares (5.00+) that are supported by it.
• Removed support for downgrading 09g units below 6.30.

Version 7.1:

• Added experimental support for 07g units on 6.6x.