It seems that there are a lot of people who dont know about new Downgraders / Custom Firmware around the community.
Anyway, This is about refreshing your memory and letting you know about these little tools. So far anything below 3.03 can be downgraded and 3.40 can be used as a custom firmware (in conjuntion with 1.50)
So as far as we are concerned all Firmwares Above 2.00 and below 3.03 (TA-082 included) have been exploited and downgraded.
There is a separate downgrader for each firmware but this time we are only going to cover the 2.80 downgrader first because it seems a lot safer than the 2.71 also having TA082 patch built right into it.
1.52 - 2.80 Downgrading
1. Update to Firmware 2.80
2. Reformat PSP memory stick (Back everything up first on to your computer)
3. Use the 2.80 EasyDown provided by PSP-hacks and Team Reign http://www.psp-hacks.com/file/1040.
4. Read instructions Carefully then downgrade, this has the TA-082 patcher built in. So regardless TA-082 does not matter.
NOTE: HEN may take time to kick in, do not give in, just keep trying
5. Update to 3.40OE
3.03 Downgrading
If your firmware is higher than 2.80 but lower than 3.03 AND you have GTA LCS upatched (check copyright, should be 2005 and your disk should have the 2.00 update on it) follow these steps
1. Update to 3.03
2. use this 3.03 downgrader -http://www.psp-hacks.com/file/1034
3. You must read instructions and supply the 1.50 update and rename it according to the manual.
4. Downgrade to 1.50 as per instructions
5. Update to 3.40OE
3.40OE can be found on www.dark-alex.org, Installation is easy. You just need to read the instructions