<font color='black' size='2' face='arial'>
<div style="font-family:helvetica,arial;font-size:10pt;color:black">
<div id="AOLMsgPart_2_041cfd50-2c18-4186-be7a-369fa484d4b7">
<font face="arial" color="black" size="2"><del></del><font size="2">Unfortunately I don't have any soldering tools or experience, so if you could give an advice<br>
about ISP programming (In-System-Programming/In-Situ-Programming) , it will be super helpful!<br>
<br>
I teardown a bricked laptop, removed AC power, laptop's power battery, and even a small CMOS battery,<br>
and now I am trying to </font>write a working BIOS image to <font size="2">laptop's </font>SPI flash chip using a SOIC8 test clip<span style="font-style: italic;"><font size="2">.</font></span><br>
<br>
But here is a <span style="font-weight: bold;">problem</span>: I could read a dump from this BIOS chip without problems, however<br>
it fails when I am trying to write - so the contents of BIOS flash chip are remaining unchanged.<br>
<span style="font-style: italic;"></span>Luckily I found out this helpful wiki page - <a rel="nofollow" href="http://flashrom.org/ISP" target="_blank">http://flashrom.org/ISP</a> , which describes <span style="font-weight: bold;">common problems</span><br>
with this ISP method of flashing, as well as gives 3 hints for solution! Sadly this page is currently down,<br>
so here is a screenshot: <a rel="nofollow" href="http://i.imgur.com/SJEYHR2.png" target="_blank">http://i.imgur.com/SJEYHR2.png</a><br>
<br>
<span style="font-weight: bold;">1.</span> - tried to make shorter wires, less than 10cm as they recommend - it did not help<br>
<span style="font-weight: bold;">2.</span> - soldering is out of possibility, cant do it, and also: wires are already short and they are good quality (pure copper)<br>
<span style="font-weight: bold;">3. </span>- This hint looks more promising, but I need help in understanding this piece of information<font size="2">:</font><br>
<span style="text-decoration: underline;"><span style="font-style: italic;">"disconnect Vcc from the programmer and power it with its normal PSU"<br>
<br>
</span></span> If I understand correctly, by Vcc they mean Vcc pin of the BIOS flash chip.<br>
But if I disconnect Vcc from the programmer, what is "normal PSU" which should power this Vcc pin?<br>
<br>
Should I connect to motherboard a laptop's power battery, or small CMOS battery, or AC adapter of laptop,<br>
so that this Vcc pin would be powered by them, or it is forbidden to do it while using SPI programmer in the same time?<br>
Or its better to try to power Vcc of flash chip from "USB to TTL" adapter - which has this 3V3 (3.3V) voltage pin?<br>
<br>
<font size="2">Yours faithfully,<br>
Robert Brown<br>
</font></font>
</div>
</div>
</font>