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<p>Dear Albin,<br>
</p>
<p><br>
</p>
<p>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.<br>
</p>
<p><br>
</p>
<p>If the chip isn't being recognised, the most likely culprits are:</p>
<p><br>
</p>
<p>1. That you attached the clip the wrong way round.</p>
<p>2. The pins on the clip aren't making proper contact with the
legs on the chip.</p>
<p>3. You've mis-wired the setup to begin with.</p>
<p><br>
</p>
<p>Regards,</p>
<p><br>
</p>
<p>John.<br>
</p>
<p><br>
</p>
<p>On 21/03/17 11:59, Persmule wrote:<br>
</p>
<blockquote
cite="mid:370a73ba-a188-1f18-3f35-640fcbf57913@gmail.com"
type="cite">
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Dear Albin,<br>
<br>
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.<br>
<br>
Best regards,<br>
<br>
Persmule<br>
<br>
<div class="moz-cite-prefix">在 2017年03月21日 18:55, Albin 写道:<br>
</div>
<blockquote
cite="mid:65ebe39986fafd23650f281874e551e6@fripost.org"
type="cite">Dear Persmule, <br>
<br>
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? <br>
<br>
"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. <br>
<br>
My current setup worked for reflashing a macbook2,1 but not for
this x220. <br>
<br>
Again, any advice would be highly appreciated. <br>
<br>
Best, <br>
<br>
Albin <br>
<br>
1. <a moz-do-not-send="true" class="moz-txt-link-freetext"
href="https://hardenedlinux.github.io/firmware/2016/11/17/neutralize_ME_firmware_on_sandybridge_and_ivybridge.html">https://hardenedlinux.github.io/firmware/2016/11/17/neutralize_ME_firmware_on_sandybridge_and_ivybridge.html</a><br>
</blockquote>
<br>
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