''I have not tested this my self so i am unsure if i can confirm.Let me know in the comment Acidmods''
Pressing a combination of keys in "System Information" will, "display some hidden information about the firmware installed on your PlayStation Vita".
How to display hidden information:
• Go to Settings > System > System Information
• Press simultaneously RTrigger + LTrigger + DPad Left + Square for a few seconds
• Release those buttons then immediately press the start button
• tadaa, additional information shows up
Wololo said:
This menu contains information about the system build, repository, revision,... doesn't look like it's super useful information for now, but still interesting I guess.
Some have reported it working for ps3