For Oppo 203/205 - Safe and fully tested on Oppo 203 EU with and without Overlay
Step by step Switch to stock FW with 100% Autoscript
Prerequisites :
- you already jailbroke your Oppo with 65-0131 RU Jailbreak
- you own the official bdpprog 65-0131 specific to your region
- download "Switch JB RU bdpprog to Stock.zip"
Step 1 : installation of the official bdpprog (EU by default)
- Case 1 : you didn't installed the JB_Overlay => use "Switch_Stock_bdpprog (NO Overlay)"
- Case 2 : you already installed the JB_Overlay => use "Switch_Stock_bdpprog (Overlay ONLY)"
If your region is different than EU then replace "bdpprog_stk" by the official bdpprog to be used for your region with the same name (bdpprog_stk).
Copy AutoScript directory into a USB stick.
Plug in your USB stick, wait for 10s after the Disk tray opening and then power off your Oppo.
Plug out the USB stick and Power on : verify in Oppo menu that the version of the firmware used is the stock one.
Step 2 (Optional) : Complete revert to stock firmware (tested only on Oppo 203 EU)
Prepare a USB stick containing the last stock firmware (65-0131) of your region (for EU : UDP20XEU.bin) and plug in it to your oppo.
Upgrade your firmware in Oppo menu (choose yes when asking to replace firmware with the same version).
Do a factory reset in Oppo menu.
Step 3 : revert to JB RU firmware
- Case 1 : you didn't installed the JB_Overlay => use "Remove_Stock_bdpprog (NO Overlay)"
- Case 2 : you already installed the JB_Overlay => use "Remove_Stock_bdpprog (Overlay ONLY)"
Copy AutoScript directory into a USB stick.
Plug in your USB stick, wait a few seconds after the Disk tray opening and then power off your Oppo.
Plug out the USB stick.
If you made the optional step 2, you will have to do again the entire RU Jailbreak USB procedure but you won't have to reinstall the overlay if you installed it before.
Otherwise, power on : verify in Oppo menu that the version of the firmware used is the JB RU one.