Solid Green light but black screen

[NinjazRcool]

My cousin tried jailbreaking my vita and accidentally installed the same firmware twice (3.60) and after that I got an error and the vita just stopped working. Only showing a green light and I can't turn it off or do anything, can't even boot into safe mode.

 

[The_Dizzy_Vizzy]

My cousin tried jailbreaking my vita and accidentally installed the same firmware twice (3.60) and after that I got an error and the vita just stopped working. Only showing a green light and I can't turn it off or do anything, can't even boot into safe mode.

The most cautious and reliable way to jailbreak your Vita is TO DO IT YOURSELF. Other than that I wish I could help you with that but I can't, as I've never encountered that problem before, neither on my Vita nor somebody else's Vita on these boards. But, don't give up on it you'll get it fixed if you stick with it.