Did you tryied to restore vitashell? Here's th tuto (thanks to
@Erfg1:
1) Install QCMA -
https://codestation.github.io/qcma/
2) Install PSVIMGTOOLS-FRONTEND -
https://github.com/SilicaAndPina/psvimgtools-frontend/releases
3) Plug in your PSVita via USB to your computer. Run QCMA, then open PSVIMGTOOLS-FRONTEND. (
Your account and AID should be auto detected.)
4) On PSVIMGTOOLS-FRONTEND's popup menu, press "Easy Installers" > "VitaShell" > "Install" (button). The program should put Vitashell in to your default CMA "APPS" folder on your computer.
5) Open Content Manager on your PSVita. Press "Copy Content" > "PC -> PS Vita System" > "Applications" > "PS Vita" > "VitaShell" (checkbox) > Copy.