Unlike previous major updates that added new functionality or user interface tweaks, firmware 3.74 is a maintenance release with a very specific focus. Here are the key changes you can expect:
Are you planning to keep the console , or are you looking to jailbreak it ? ps vita firmware 3.74 download
If you are trying to reinstall firmware to fix system corruption, you must use Method 1 (Safe Mode) and force the update through a computer using QCMA. Error: "C3-12049-6" Unlike previous major updates that added new functionality