Yesterday and earlier today I tried to upgrade from v1 to v7 for my XL2720Z using ubuntu 14.04 lts and the instruction given here:
viewtopic.php?f=13&t=779&start=490#p35095.
It all went smooth until the final step ,where I would get an error stating:
ubuntu@ubuntu:~/flashrom$ sudo ./flashrom -p mstarddc_spi:dev=/dev/i2c-1:49 -c "MX25L1605A/MX25L1606E" -w XL2720ZV7.bin
flashrom v0.9.7- on Linux 4.4.0-142-generic (x86_64)
flashrom is free software, get the source code at
http://www.flashrom.org
Calibrating delay loop... OK.
Info: Will try to use device /dev/i2c-1 and address 0x49.
Info: WILL reset the device at the end.
Found Macronix flash chip "MX25L1605A/MX25L1606E" (2048 kB, SPI) on mstarddc_spi.
Reading old flash chip contents... done.
Erasing and writing flash chip... Erase/write done.
Verifying flash... FAILED at 0x00000000! Expected=0x02, Found=0xb0, failed byte count from 0x00000000-0x001fffff: 0xfe
Your flash chip is in an unknown state.
Please report this on IRC at chat.freenode.net (channel #flashrom) or
mail
[email protected], thanks!
After that nothing happened when i tabbed the power button.
Luckily I could revert to my backup firmware, which made it work again.
Just now, I finally tried upgrading from my backup v1 to the v5, which turned out to work, so it\s only the v7 that is not working for my XL2720Z.
So thanks a lot for providing all the info in this thread.