Custom Firmware Downgrade from 6.31/6.35 to 6.20

Downgrade from 6.31/6.35 to 6.20 via Davee's Downgrader
1. Downloadlah Davee's downgrader
2. Ektrak .zip tersebut, akan ada folder bernama PSP, letakkan di ROOT MEMORY STICK
3. Download OFW 6.20 yg sesuai tipe PSP anda

for PSP GO
for PSP 1000, 2000, & 3000

4. Ekstrak dan letakkan file EBOOT.PBP ke dalam folder PSP/GAME/UPDATE/ di memory stick anda
5. Jalankan DAVEE'S melalui menu game di XMB

NB; Resiko tanggung sendiri