Ch341a V 118 ((new)) Jun 2026

Here is why:

Click on or manually select the chip manufacturer and model (e.g., W25Q128). Action:

There is some debate on whether this modification is always necessary. Some argue that recent software versions or different board revisions have mitigated the issue. However, the voltage hack remains a common practice among experienced users to ensure the safety of their chips. ch341a v 118

On , look for a 3-pin jumper named "3.3V / 5V". In some revisions, this jumper only changes the VCC voltage fed to the ZIF socket pin 20. The logic signals on pins 1-19 remain at 5V unless the board includes level shifters.

Instead of buying an external adapter, some users replace the 3.3V LDO with an adjustable regulator (e.g., LM317) set to 1.8V. They also add a TXS0108E level shifter for the data lines. Here is why: Click on or manually select

If your board outputs 5V logic, you can safely modify it by lifting of the CH341A chip or cutting the 5V trace feeding its logic subsystem, then jumping it directly to the output of the onboard 1117-3.3V voltage regulator.

Connects the chip in printer/parallel mode, which software tools use to read and write flash memory. However, the voltage hack remains a common practice

The CH341A programmer is not limited to just BIOS chips.

Many recent versions have transitioned from USB-A to USB Type-C for modern compatibility. Hardware and Pricing