Are you a mobile technician facing FRP Lock issues, and you want to unlock your Vivo Oppo A40 ? The ISP Pinout connection offers many benefits. Utilising the unloctool allows you to bypass the FRP lock and reset your user data, saving you time and money by avoiding costly repairs or service center visits. This post will show you the ISP Pinout for your Oppo A40, which is easy with our step-by-step guide below.
Easy JTag and UFI Box can bypass Oppo A40 FRP pattern and screen locks. It doesn’t matter how much knowledge you have of Android software; this method will solve the problem quickly. If you see the message “USB not recognized,” your USB doesn’t work. You can only use this method if your battery is fully charged and your USB port works properly. Please feel free to leave your questions in the comments; I will do my best to answer them.
⚙️ What is ISP Pinout (In-System Programming)?
In simple language, ISP lets you access the EMMC chip without pulling it out. You simply have to identify the appropriate pinout of the board, and you have to utilize a supported EMMC tool such as UFI, Easy JTAG, or Medusa Pro to attach it directly.
Isp Pinout is useful when:
- Phone is dead (black screen, no boot, no charging)
- FRP is locked, and you can’t use ADB, fastboot, or OTG bypass
- You need to dump firmware from a working unit to repair a dead one
- You’re working on a boot repair or partition restore
- Phone is detected as “unknown” in PC (EDL not working)
Oppo A40 ISP EMMC Pinout Image:
Here’s where things get technical. The Oppo A40 shares a hardware layout with several BBK models, but the actual pin locations can vary slightly. You’ll find the ISP points near the EMMC chip under the metal shield.
EMMC ISP Pin Labels You Need:
CMD – Command Line
CLK – Clock
DAT0 – Data line 0
VCC / VCCQ – Power supply for EMMC
GND – Ground
💡 Note: Use a microscope or a 10x magnifier to identify the points correctly. Don’t rely on diagrams alone—confirm the layout visually.
When repairing dead boot problems, especially for devices like the Oppo A40, the Easy JTAG Plus and UFI Box dongles are great for mobile repair. They are important for scenarios where the phone has been incorrectly flashed and does not display the startup logo, and is no longer responding to power.
Required Tools for ISP Pinout:
- Make sure your bench is set up with the right tools before jumping in:
- UFI Box, Easy JTAG, or Medusa Pro
- 0.1mm – 0.3mm jumper wire
- Fine tip soldering iron
- Isopropyl Cleaner (IPA 99%)
- Soldering flux
- Multimeter (for checking continuity)
How to Connect ISP to EMMC Box
- Remove the battery from the phone – extremely important to prevent voltage conflicts.
- Clean the PC board area using isopropyl alcohol.
- Connect jumper wires to CLK, CMD, DAT0, GND, and VCC with care using solder.
- Connect the wires to your EMMC tool following the tool’s pinout.
- Double-check each wire using a multimeter for any shorts.
- Turn on your EMMC tool and scan the chip in software.
- ✅ If you have the right connection, you will see EMMC chip information in the tool window.
