flashrom v1.2 on Linux 5.13.1-1-default (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 SST flash chip "SST25VF016B" (2048 kB, SPI) on ch341a_spi.
Reading old flash chip contents... done.
Erasing and writing flash chip... FAILED at 0x00000000! Expected=0xff, Found=0x4e, failed byte count from 0x00000000-0x00000fff: 0xfb8
ERASE FAILED!
Reading current flash chip contents... done. Looking for another erase function.
FAILED at 0x00000003! Expected=0xff, Found=0x7f, failed byte count from 0x00000000-0x00007fff: 0x1e76
ERASE FAILED!
Reading current flash chip contents...
cb_in: error: LIBUSB_TRANSFER_TIMED_OUT
ch341a_spi_spi_send_command: Failed to read 4100 bytes
libusb: warning [handle_timeout] async cancel failed -5
libusb: warning [handle_timeout] async cancel failed -5
libusb: warning [handle_timeout] async cancel failed -5
libusb: warning [handle_timeout] async cancel failed -5
libusb: warning [handle_timeout] async cancel failed -5
libusb: warning [handle_timeout] async cancel failed -5
libusb: warning [handle_timeout] async cancel failed -5
libusb: warning [handle_timeout] async cancel failed -5
libusb: warning [handle_timeout] async cancel failed -5
libusb: warning [handle_timeout] async cancel failed -5
libusb: warning [handle_timeout] async cancel failed -5
Can't read anymore! Aborting.
FAILED!
Uh oh. Erase/write failed. Checking if anything has changed.
Reading current flash chip contents... done.
Apparently at least some data has changed.
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!