Once you have a successful ISP connection, you can:
Do not write a random firmware without checking partition sizes. The K41s uses a dynamic partition layout.
WARNING: Incorrect ISP pinout on LG K41s can permanently kill the eMMC or the PMIC (Power Management IC). Observe these rules:
The LG K41S ISP pinout relies on the resistor network R600 (DAT0), R601 (CMD), and R602 (CLK) near the eMMC. With careful micro-soldering and a compatible eMMC programmer, you can restore any bricked K41S, remove FRP/MDM locks, or recover user data. Always perform a full eMMC dump before attempting any write operations.
For the latest schematic diagrams, join professional repair forums or consult the Z3X/Octoplus software database for firmware-specific pinouts. lg k41s isp pinout
The LG K41S (LM-K410) Go to product viewer dialog for this item.
ISP (In-System Programming) pinout is a critical hardware configuration used by technicians to interact directly with the device's eMMC storage without removing the chip from the motherboard. This method is primarily used for unbricking devices, FRP (Factory Reset Protection) removal, or dead boot repair when the phone does not communicate via USB. ISP Pinout Connections
To establish a connection with tools like EasyJtag, UFI Box, or Medusa, you must solder jumpers to specific test points on the PCB. The standard eMMC ISP interface requires the following six signals: DAT0: The primary data line for communication. CMD: Sends commands from the controller to the memory.
CLK: Provides the clock signal to synchronize data transfer. Once you have a successful ISP connection, you can:
VCC: Power supply for the eMMC controller (typically 2.8V - 3.3V). VCCQ: Power supply for the I/O lines (typically 1.8V). GND: Common ground for the circuit. Technical Considerations
Mediatek Chipset: The LG K41S utilizes the MT6762 (Helio P22) chipset. In cases where ISP pinouts are hard to find, some technicians use MTKClient to perform software-based repairs and rooting if the device can still enter BROM mode.
Common Issues: Users often seek ISP pinouts when the USB data lines are damaged, preventing standard PC connection for FRP bypass or flashing.
Short Circuit Warnings: When connecting, specialized boxes may report "VCC and VCCQ Short Circuit Detected" if the health of the eMMC is poor or the soldering is incorrect. Repair Context Do not write a random firmware without checking
ISP methods are frequently used on the LG K41S because newer security patches (e.g., Android 11, March 2022 security) may disable standard BROM or Testpoint access, leaving hardware-level ISP as the only viable option for deep-level repair.
After testing on multiple revisions (K410EMW, K410Z), the following points are the most reliable. You will find these points on the top side of the motherboard, near the eMMC chip (usually a Samsung or Kingston BGA package).
| Signal | Pad / Resistor Location | Polarity / Notes | | :--- | :--- | :--- | | CLK | TP502 (Round test point near the edge) | Pull-up resistor (R502) present nearby. | | CMD | TP503 (Adjacent to CLK) | Requires a stable 1.8V pull-up. | | D0 | TP504 (Third in the series) | This is the main data line. | | GND | Any large copper shield or TP_GND1 | Use multiple ground points to reduce noise. | | VCC (eMMC Power) | Capacitor C505 (positive side) | DO NOT POWER FROM PROGRAMMER. This is for measuring only. |
Apply a small amount of flux to the test points.
Tip: Do not solder directly to the eMMC ball grid array unless you have professional rework skills. The test points are designed for this.