Before you begin, you’ll need to make sure that your computer is running a compatible operating system (Windows XP or later). The Acer ‘exe’ can easily unpacked with 7-zip, but it contains 4 different bios regions (still no complete firmware image! For 24 series chips (I2C), you will have to select it manually as they don't have any id / signature for us to identify them.

One of the videos linked above seems to indicate that we can check for the possible need for the mod by confirming that there is 5V on the data pins. ZIP - archive containing driver files and serial API and library (you don't need specific API for standard serial port, but it contains some special functions to get IC version etc. Using SOP8 programming clip: This method is suitable for BIOS chips that are soldered onto the motherboard and cannot be removed.With your CH341A programmer up and running correctly, programming is now 10x faster than ever before! Simplemente enchufe el chip y la configuración de su programador se mostrará con las teclas correctas.

I got one of these today, and I noticed the PCB layout of mine is different compared to the one posted in this forum by jakeisprobably. To program a Bios using the CH341A programmer, you will need to download the CH341A programmer Software first. I will place the link for the 16 pin chip clip at the bottom of this blog along with a link for the CH341a programmer. Alguien me podria ayudar o darme alguna orientacion o enlace donde pueda encontrar mas info sobre el CH341B ?I haven't looked into the CH341A enough to know whether ACT is supposed to go low when recognised by the host pc or later during some USB initialization perhaps before chip programming. It is a small, portable device that connects to a computer via USB and can support a wide range of chips, making it a versatile tool for electronics enthusiasts and professionals alike.

Two modes of programming and serial port are optional, and online switching does not need to plug and unplug USB.The chip is detected successfully but when I try to read the chip it shows "Detection fails, could not find chip". Make sure it opens properly and looks correct in any BIOS editing tools you are familiar with too, then you'll know it's OK. Although you can use CH341A to emulate serial and parallel ports, you cannot use them with PonyProg. Allí encontrará mucha información útil y útil sobre programador e incluso consejos para hacer que su experiencia de compra sea increíble! I may attach a LED as you (and datasheet) suggest so I can see if ACT goes low during a programming attempt.

It didn't have the pinheaders on the sides of the ZIF socket which I wanted to know what they are for. Here we will provide you with the Software for your programmer and all other details related to the CH341a Universal Programmer. If you're running a script or application, please register or sign in with your developer credentials here. The proposed mod is simply to make three track cuts disconnecting those pins from the Vcc trace on the bottom side running under the ZIF socket, to add a wire link to patch the interrupted Vcc track back together, leaving out the /HOLD pin, then to fit pullup resistors from the Vcc track to the /HOLD and /WP pins. Thankfully I was able to program the chip for my project using the other working one, but I'd be curious as to what's wrong with my black CH341A programmer, and will test it further in the coming weeks.Best is to be safe by studying the specs and datasheet on the BiosChip number in question mounted on the target board. The connections were easy to make since everything has either pin markings, silkscreen prints, or some type of indicator to reference pin 1.