Button Combos

More System Information

1. Go to XMB [Settings] > [System] > [System Information]
2. Press simultaneously + + + for a few seconds
3. Release those buttons then immediately press and keep it held
4. While holding , press once to have the menu stay up on it's own.

Note: More information: More System Information

QA

Getting the QA Flag Menu

Set your cursor on (not in) Network Settings and press the key combo (all at the same time):
+ + + + +

You should see Edy Viewer, Debug Settings, and Install Package Files if done correctly.

Note: Requires QA-Flag enabled in EEPROM. More information: QA Flagging

Shop

Unlock Demonstration Mode

Note: Set your cursor on (not in) Security Settings and press the key combo (all at the same time):
+ + +

Note: Requires unlock code afterwards. More information: Unlock Codes

PS2 Netemu

Unlock Configuration Mode and Debug Information Mode

Note: Inside a PS2 game, access the ps2netemu menu by pressing and press the key combo (all at the same time) for a few seconds:
+ + +
then press for two new options in netemu: Debug Information and Configuration.

• Credits to picard for his awesome RE skills