lift the arm of the programmer, insert the result in the mini programmer. The Bios should be on the left of the programmer if we look at it with the USB connection at the top). Enable the arm.

As I described the BIOS component is very near from a set of 9 extras pins (not documented) and the clip can’t be properly clipped without doing some ‘manual mechanical adaptation’ on one side of the clip. Once unsoldered, it will be necessary to mount the small integrated circuit sold with the SPI CH341A mini programmer, and to weld the two small jumper on the center where the figures are indicated.Multiple flash chip definitions match the detected chip(s): “MX25L12805D”, “MX25L12835F/MX25L12845E/MX25L12865E”. It’s important to repeat this step twice as we need to make sure that communication with the IC is working as expected: Then, press the Verify button to verify that the BIOS has been correctly programmed, that there are no errors. The software should indicate: that the memory buffer and the chip have the same code.

CH341PAR.EXE– self installing archive with multiprotocol interface driver ( this one is for the programmer mode)The CH341A is a USB-based IC for interfacing with SPI devices. In this tutorial, we’ll show you how to install the CH341A drivers and use the CH341A programmer to flash an SPI BIOS chip. CH341芯片支持5V电源电压或者3.3V 电源电压。当使用5V 工作电压时，CH341 芯片的VCC 引脚 输入外部5V 电源，并且V3 引脚应该外接容量为0.01uF～0.1uF 的电源退耦电容。当使用3.3V 工作

if nothing works, then the procedure becomes more complex. If the software can not read the chip properly, it can not also reprogram it, on the contrary it will further corrupt it. It will be necessary to disassemble the BIOS of the motherboard and put it directly on the small integrated circuit (as in the image below).

8) Flash an ATtiny85 Digistump using the new PCB

EEPROM CH341A programmer – Read and write data to chip on Linux Software Requirements and Linux Command Line Conventions Category Nama Menu utama dan fungsi software ini sama dengan versi 1.13 dan versi 1.4.0 Namun yang membuat software ini beda dari versi sebelumnya adalah audio dafault yang tidak ada pada software versi yang lain, dan tombol Detect Chip yang berfungsi untuk mendeteksi secara otomatis Chip yang terpasang di CH341A USB mini Programmer, selain itu juga lebih lengkap karena versi 1.1.1.33 ini sudah support tipe dan seri chip, seperti 12C EEPROM, SPI FLASH, SPI EEPROM, MICROWIRE, dan SPI AVR. The chip is still readable and writable, so I guess is not totally fried (if so, peace, I'm just experimenting in a world I don't know at all, as said I fount this laptop in the trash). press the Program button. The software will then write the Bios on the chip. It can take between 2 and 15 minutes. However, after multiple attempts I have not been able to use any of the tools to recognise my CH341A programmer and the chip. After days of searching I have settled with ch341eeprom software.

For the Dell system I used, the text was pretty readable by taking a proper macro picture and zooming in: When the PCB is trimmed and clean, it looks like this. CH341A PCB board trimmed and clean 7) Test the PCB rig Some command line utilities are available on Windows too. SNANDer is a cross-platform, open source utility for CH341A serial programmers. There is a big difference between this utility and the others: it does not use the I/O library provided by CH341A manufacturer so it needs a different driver, libusb based. You have to use Zadig to create the driver. If you have never installed the official driver, CH341A will automatically show in the devices drop-down. Otherwise go to Options - List All Devices.

As mentioned in the introduction, the BIOS chip from my Lenovo X1 Yoga laptop got corrupt and I managed to repair things by reflashing it with a working BIOS ROM. For this article, I will repeat the steps I took, on a Dell Precision T1700 MT. The process is exactly the same. Youtube Video Here I cut the connection between the holes at location 6 with an X-acto knife and added the wire jumpers like in the diagram above. I used the legs from a spare resistor I had lying around. They are thin so they leave enough room for the through-hole pins to fit. Add wire jumpers from a spare resistor Note: If you are flashing an AMD motherboard, you need to put the 1.8V adapter into the SPI, and then put the clip assembly onto that. If in the end nothing works, the problem becomes even more insoluble. The motherboard may eventually be damaged. You are good at buying an old motherboard with the risk of having an obsolete card, or the same problem of corrupted Bios. The software will be in version 1.13 which has English as the language, but it may have incompatibility with some chips, especially high-capacity memory. However, the Russian Kovzhun Mikhail has made an alternative version for the CH341A programmer software. Adding capability to automatically detect the following chips: