Hi:  As requested at the bottom of the bios flash, the following error was reported.

Appreciate any help you can provide.   Thank you, S.

Error:

$ sudo flashrom -p ch341a_spi -c MX25L3273E -w bios1_wl.img
flashrom v1.2 on Linux 5.4.0-136-generic (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 Macronix flash chip "MX25L3273E" (4096 kB, SPI) on ch341a_spi.
Reading old flash chip contents... done.
Erasing and writing flash chip... Erase/write done.
Verifying flash... FAILED at 0x00000200! Expected=0xde, Found=0xff, failed byte count from 0x00000000-0x003fffff: 0x20c290
Your flash chip is in an unknown state.
Please report this on IRC at chat.freenode.net (channel #flashrom) or
mail flashrom@flashrom.org, thanks!