Dear Albin,
As for Persmule, I've never had the need to use an ATX power supply, or anything beyond the external BBB power supply and the two 3.3v pins/holes on the BBB itself when flashing Chromebooks externally. If the chip isn't being recognised, the most likely culprits are: 1. That you attached the clip the wrong way round. 2. The pins on the clip aren't making proper contact with the legs on the chip. 3. You've mis-wired the setup to begin with. Regards, John. On 21/03/17 11:59, Persmule wrote: > Dear Albin, > > You should only power your BBB with an external 5V power supplier, and > connect its usb peripheral port to your controlling computer. I have > never used any ATX power supplier for this, just the configuration I > just described is enough. > > Best regards, > > Persmule > > 在 2017年03月21日 18:55, Albin 写道: >> Dear Persmule, >> >> First, thank you for your work on free software. I'm following your >> guide[1] to replace Bios on my Thinkpad X220 with a neutralized >> coreboot using a BBB rev. C and an ATX power supply for the v3.3 pin, >> but flashrom is unable to recognize the chip. Did you have any >> problems recognizing the chip on your device and do you have any >> ideas of what to try? >> >> "image" at #coreboot suggested that I should connect the power cable >> to the machine instead of using an external power supply but I >> haven't read anywhere that this should work or even be safe. >> >> My current setup worked for reflashing a macbook2,1 but not for this >> x220. >> >> Again, any advice would be highly appreciated. >> >> Best, >> >> Albin >> >> 1. >> https://hardenedlinux.github.io/firmware/2016/11/17/neutralize_ME_firmware_on_sandybridge_and_ivybridge.html > > >
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