Yes a Sony PSP bought in Thailand will work in Australia. PS3 that are bought in Thailand will also work in Australia.
Yes
You should have no problem with games as all PSP games are region free, the only problem is with UMD Movies which are region coded. To put it simply any game will work anywhere.
Yes I think you can. I think the psp is universal because I brought a game in the USA and i got my psp in New Zealand and it works. Yes you definitely can but the UMD movies are region coded and so if you bought a UMD from the UK and tried playing it on a American psp it would not work
yes.
Yes, PSP games are not region locked, though PSP movies are.
it will work regardless of where you bring it - it just may not be able to connect to their networks...
yes only DVDs and video's don't work
No, while PSP games are region free, the UMD movies are not. A UK UMD movie will not play on a US PSP.
perhaps your psp has a lower firmwire version.
yes
yes all psp games works on every psp