Hello Jen, On 31.07.22 21:03, Jen Gilbert wrote:
Hi, I'm trying to flash the rom of a bricked Chromebook. I've tried multiple times, removing and reattaching the ch341a. The rom chip is still attached to the motherboard (I've never soldered). Any help would be appreciated!
it looks like your connection to the SPI chip is just a little flaky. Every time flashrom fails to read 0xff, only a single 1 bit is missing (i.e. 0xfb: bit 2 is missing; 0xf7: bit 3 is missing etc.). Also, if you look at the erased ranges, you'll see that some errors actually vanished: > failed byte count from 0x00000000-0x00007fff: 0x3 > failed byte count from 0x00000000-0x0000ffff: 0x2 So it seems reading is unreliable. But erasing works fine, writing should too (but might also suffer from bit flips). What you can do to enhance signal quality: * Use shorter cables. <=20cm is recommended, sometimes <=10cm helps. * Add series resistors to the data/control lines (MOSI, MISO, CS, CLK). Hope that helps, Nico _______________________________________________ flashrom mailing list -- flashrom@flashrom.org To unsubscribe send an email to flashrom-le...@flashrom.org
