Always create a full dump (at least 4GB or the full chip) before proceeding.
For many Samsung models, clearing the (if the chip allows) or modifying the Param partition is necessary.
Connecting thin wires directly to the motherboard's test points.
Reassemble the device and flash the stock firmware using Odin. Troubleshooting & Common Issues samsung kg lock remove easy jtag exclusive
Imagine this: You perform a factory reset on a Samsung Galaxy S22, S23, or S24, hoping to clean it for a new user. Instead of booting normally, the phone stops at the Setup Wizard with a message: "This device is locked because the KG state is active. Please sign in with a previously synced Google account."
For repair shops and advanced hobbyists, the is currently the only reliable way to unlock a Samsung device stuck in KG Prenormal state with a newer bootloader. It bypasses the time lock, ignores Samsung’s server validation, and works at the hardware level.
Uses ISP (In-System Programming) to connect to the eMMC or UFS chip, allowing for deep partition modifications that USB methods cannot reach. Always create a full dump (at least 4GB
Jumper lines are too long or experiencing electrical interference.
For devices: Dedicated UFS ISP adapters or a UFS BGA socket (BGA 153, 254, etc.). Note: UFS ISP requires extreme precision due to high-frequency differential signaling.
Flash a clean, official firmware using Odin or the Easy J-Tag Flasher. Reassemble the device and flash the stock firmware
The "exclusive" JTAG software logs the IMEI and serial number to a server to prevent abuse. Always keep an invoice of the device.
What is the current displayed in Download Mode (e.g., Locked, Active, Prenormal)? Share public link
Go to the partition manager tab and manually read and save the following partitions: SEC_EFS / EFS (Contains network and serial data) NV_DATA / RADIO USERDATA (Optional, if file retrieval is required)
This usually indicates that the jumper wires are too long or the soldering joint is weak. Keep your ISP wires under 10cm in length and ensure solid solder connections.
Working knowledge of (if using ISP) and partition management . The Exclusive Removal Process 1. Hardware Connection