Configure the bus width to (ISP mode always uses a 1-Bit bus width).
The phone runs on a . Unlike Qualcomm devices that have a dedicated EDL (Emergency Download) mode, MTK devices use a different protocol known as Boot-ROM (BROM) . To force an MTK device into BROM mode for low-level flashing, you often need to short a specific component on the motherboard, known as a "test point" or "ISP point".
[ Motherboard Components / PMIC Test Points ] ================================================= ( VCCQ ) [1.8V Capacitor] ( VCC ) [2.8V-3.3V Capacitor] | | +-------------------------------+--> To Box Power Output ( CLK ) o--[ Resistor / Test Point ]----> To Box CLK ( CMD ) o--[ Resistor / Test Point ]----> To Box CMD ( D0 ) o--[ Test Point Line ]----------> To Box DAT0 ( GND ) [Large Copper Shielding Ground] -> To Box Ground Primary Signaling Points
To assist with your search and to guide you on how to use this information, this guide compiles the most relevant technical data for the LG K41S. While an official ISP pinout diagram is not publicly available, you can find the pinout for a phone with the same processor, the MediaTek MT6762, and use it as a reliable cross-reference.
Carefully extract the motherboard from the smartphone's chassis. Locate the metal shielding covering the eMMC chip area. If the test points are obstructed, use a specialized precision rotary cutting tool to open a small window in the shielding. Avoid using excessive heat from a hot air station, as this can inadvertently shift underlying components or corrupt the BGA solder balls under the CPU. 2. Solder the Connections Using a fine-tip soldering iron set to approximately 350∘C350 raised to the composed with power C
Carefully remove the shielding covering the eMCP memory chip (BGA 221).
: Enameled copper wire, preferably 0.02mm thickness.
Once the physical connections are securely established, configure your software interface using these parameters: Configuration Setting 1-Bit Mode (Standard for ISP) Interface Frequency Start low at (Increase only if stable) Voltage Selection Storage Type eMMC / eMCP
Which (e.g., EasyJtag, UFI, Medusa) you are using.
