Programmateur:

AMAZON: CH341A 24 25 Series EEPROM Flash BIOS USB Programmer with Software & Driver + SOIC8 SOP8 Clip Adapter Module

Programmation de l'eeprom

Télécharger le firmware BK8000L avec interface UART activée
Télécharger et compiler la version modifiée de flashrom (avec le support de l'eeprom FT25H04)
Flasher l'eeprom avec le nouveau firmware BK8000L.flash


$ wget https://github.com/tomaskovacik/kicad-library/raw/master/library/datasheet/F-6188_BK8000L/BK8000L.flash

$ git clone https://github.com/tomaskovacik/flashrom.git
$ cd flashrom
$ make

$ ./flashrom --programmer ch341a_spi --write ../BK8000L.flash
flashrom p1.0-87-g9d18500 on Linux 6.16.8-arch1-1 (x86_64)
flashrom is free software, get the source code at https://flashrom.org

Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
Found FMD flash chip "FT25H04" (512 kB, SPI) on ch341a_spi.
===
This flash part has status UNTESTED for operations: PROBE READ ERASE WRITE
The test status of this chip may have been updated in the latest development
version of flashrom. If you are running the latest development version,
please email a report to flashrom@flashrom.org if any of the above operations
work correctly for you with this flash chip. Please include the flashrom log
file for all operations you tested (see the man page for details), and mention
which mainboard or programmer you tested in the subject line.
Thanks for your help!
Reading old flash chip contents... done.
Erasing and writing flash chip... Erase/write done.
Verifying flash... VERIFIED.

Note:

L'auteur indique qu'il n'est pas nécessaire de dessouder l'eeprom, et qu'il est possible de flasher l'eeprom directement sur le module (a condition de mettre le reset du module à la masse) . Je n'ai pas testé cette procédure, j'ai dessoudé l'eeprom.

Références:

https://kovo-blog.blogspot.com/2017 (BK8000L Flash tutorial)
https://famousconnections.eu/wp-content/uploads/2017/10/FT25H04.pdf (eeprom datasheet)
https://www.amazon.fr/dp/B07RKXSMKH (Amazon CH341A hardware programmer)
https://www.flashrom.org/ (Linux programmer)
https://github.com/tomaskovacik/kicad-library/tree/master/library/datasheet/F-6188_BK8000L (Firmware and resources)

Remerciements

Merci a tomaskovacik pour la procédure détaillée de mise à niveau de l'eeprom