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. Internal flashing means that the host CPU on your system can re-program the SPI flash, using an on-board SPI programmer (which all boards have). You do this from Linux, with flashrom. Take note of the ttyACMx. Flashrom is now usable (substitute ttyACMx with what you observed earlier). flashrom -p serprog:dev=/dev/ttyACMx,spispeed=16M If your system has lower capacity SPI flash, you can upgrade. On most systems, SPI flash is memory mapped and the maximum (in practise) that you can use is a 16MiB chip. For example, KGPE-D16 and KCMA-D8 mainboards in libreboot have 2MiB flash by default, but you can easily upgrade these. Another example is the ThinkPad X200S, X200 Tablet and T400S, all of which have WSON8 where the best course of action is to replace it with a SOIC8 flash chip.

Seperti Software Programmer versi 1.13 dan 1.4.0, software ini pun masih bersifat portabel jadi anda tak perlu meng-install di laptop atau komputer anda, anda cukup membuka folder file CH341A V. 1.1.1.33 kemudian pilih Software CH341A V. 1.1.1.33 dan klik 2X atau klik kanan kemudian Pilih Run as administrator untuk menjalankan softwarenya, atau lebih gampangnya anda bisa membuat shortcut atau menampilkannya ke layar desktop anda, icon software Programmer CH341A version 1.1.1.33 supaya bisa dengan mudah membuka dan menjalankan tanpa harus membuka folder penyimpanan, caranya; Come potete vedere nell'immagine qui sopra, c'e' raffigurato il software fornito con un programmatore CH341a. Se analizziamo bene le categorie possiamo notare al centro un grande riquadro per analizzare i dati letti nella memoria, a destra c'e' una colonna dove possiamo visualizzare i dati convertiti in testo. Ricordatevi che se dovete effettuare qualsiasi modifica ai dati non dovete inserire spazi o caratteri in piu' ma sostituire quelli gia' presenti, il peso del file deve essere uguale all'originale. A sinistra c'e' una colonna dove e' possibile selezionare il tipo di memoria oppure effettuare un rilevamento automatico, andando in basso c'e' una status bar dove possiamo leggere a che punto si trova l'operazione corrente. In basso all'angolo a destra possiamo vedere se il programmatore e' collegato al computer e riconosciuto correttamente dal software. Parlando della sezione in alto, troviamo tutte le operazioni precedentemente citate: Mirror to the official CH341A drivers and used software, along with the documentation. I. Requirements

CH341A devices

Emulate standard UART interface, used to upgrade the original serial peripheral or expand additional UART via USB. A good choice of soldering iron would be a T12-D08 or T12-K tip, on a T12 soldering station. KSGER makes nice soldering stations: Hardware full duplex UART interface, integrated transmit-receive buffer, supports communication baud rate varies from 50bps to 2Mbps. Use of flux is very important, to get a good solder joint, because it removes oxides and prevents further oxidation during soldering, ensuring that the solder flows properly, otherwise the solder will ball up and you won’t get a good joint.

But, if it does have the flip up cover and removable BIOS chip in there, it may program easier in a spring adapter directly in the programmer vs programming on-board with SOIC cableFlashrom is the software that you will use, for dumping, erasing and rewriting the contents of your NOR flash. 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. When you’ve placed the diode, ensure that VCC on the chip is isolated from all other components on that board, which share the same power rail. Further, ensure that the pull-up resistors for WP/HOLD are only connected to the side of the diode that has continuity with the VCC pin (this is important because if they’re not, they won’t be held high while doing ISP flashing, even if they’re still held high when the mainboard is fully powered on). Now, try to read the chip again with the software CH341A programmer v1.30 (see the 4th part of the guide, above). Chances that it works this time are the largest possible. There are no more problems of stories of insufficient or excessive tension.

We will be using the flashrom software which is written to dump, erase and rewrite these flash chips. CH341 is a USB bus convert chip, providing UART, printer port, parallel and synchronous serial with 2-wire or 4-wire through USB bus There is a plentiful of software available on Linux to deal with EEPROM CH341A programmer. Many of them are available via standard Debian repository such as flashrom. Then you need to install it in the Programmer, making sure the notch faces the same way as indicated in the white diagram in the bottom right corner:

EEPROM CH341A programmer on Linux

The result of using a decoupling capacitor is that some of the noise on the DC line is filtered to ground, making the DC signal much cleaner/straighter (when seen on an oscilloscope). Once you have compiled the software locate the executable ch341eeprom. Feel free to execute the newly compiled software now. The output should look as follows: