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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<style type="text/css">
@import url('../css/main.css');
</style>
<title>ThinkPad X60 Tablet: Recovery guide</title>
</head>
<body>
<div class="section">
<h1>ThinkPad X60 Tablet: Recovery guide</h1>
<p>This section documents how to recover from a bad flash that prevents your ThinkPad X60 Tablet from booting.</p>
<p><a href="index.html">Back to previous index</a></p>
</div>
<div class="section">
<h2>Table of Contents</h2>
<ul>
<li>
Types of brick:
<ul>
<li><a href="#bucts_brick">Brick type 1: bucts not reset</a></li>
<li><a href="#recovery">Brick type 2: bad rom (or user error), machine won't boot</a></li>
</ul>
</li>
</ul>
</div>
<div class="section">
<h1 id="bucts_brick">Brick type 1: bucts not reset.</h1>
<p>
You still have Lenovo BIOS, or you had libreboot running and you flashed another ROM; and you had bucts 1 set and
the ROM wasn't dd'd.* or if Lenovo BIOS was present and libreboot wasn't flashed.<br/><br/>
In this case, unbricking is easy: reset BUC.TS to 0 by removing that yellow cmos coin (it's a battery) and putting it back after a minute or two:<br/>
<img src="../images/x60t_unbrick/0008.JPG" alt="" /><br/><br/>
*Those dd commands should be applied to all newly compiled X60 ROM images (the ROM images in libreboot binary archives already have this applied!):<br/>
dd if=coreboot.rom of=top64k.bin bs=1 skip=$[$(stat -c %s coreboot.rom) - 0x10000] count=64k<br/>
dd if=coreboot.rom bs=1 skip=$[$(stat -c %s coreboot.rom) - 0x20000] count=64k | hexdump<br/>
dd if=top64k.bin of=coreboot.rom bs=1 seek=$[$(stat -c %s coreboot.rom) - 0x20000] count=64k conv=notrunc<br/>
(doing this makes the ROM suitable for use when flashing a machine that still has Lenovo BIOS running,
using those instructions: <a href="http://www.coreboot.org/Board:lenovo/x60/Installation">http://www.coreboot.org/Board:lenovo/x60/Installation</a>.
</p>
</div>
<div class="section">
<h1 id="recovery">bad rom (or user error), machine won't boot</h1>
<p>
In this scenario, you compiled a ROM that had an incorrect configuration, or there is an actual bug preventing your machine from
booting. Or, maybe, you set BUC.TS to 0 and shut down after first flash while Lenovo BIOS was running. In any case, your machine is bricked and will not boot at all.
</p>
<p>
"Unbricking" means flashing a known-good (working) ROM. The problem: you can't boot the machine, making this difficult. In this situation, external hardware (see hardware requirements above) is needed which can flash the SPI chip (where libreboot resides).
</p>
<p>
<img src="../images/x60t_unbrick/0000.JPG" alt="" />
</p>
<p>
Remove those screws:<br/>
<img src="../images/x60t_unbrick/0001.JPG" alt="" />
</p>
<p>
Remove the HDD:<br/>
<img src="../images/x60t_unbrick/0002.JPG" alt="" />
</p>
<p>
Push keyboard forward to loosen it:<br/>
<img src="../images/x60t_unbrick/0003.JPG" alt="" />
</p>
<p>
Lift:<br/>
<img src="../images/x60t_unbrick/0004.JPG" alt="" />
</p>
<p>
Remove those:<br/>
<img src="../images/x60t_unbrick/0005.JPG" alt="" />
</p>
<p>
<img src="../images/x60t_unbrick/0006.JPG" alt="" />
</p>
<p>
Also remove that (marked) and unroute the antenna cables:<br/>
<img src="../images/x60t_unbrick/0007.JPG" alt="" />
</p>
<p>
For some X60T laptops, you have to unroute those too:<br/>
<img src="../images/x60t_unbrick/0010.JPG" alt="" />
</p>
<p>
Remove the LCD extend board screws. Also remove those screws (see blue marks) and remove/unroute the cables and remove the metal plate:<br/>
<img src="../images/x60t_unbrick/0008.JPG" alt="" />
</p>
<p>
Remove that screw and then remove the board:<br/>
<img src="../images/x60t_unbrick/0009.JPG" alt="" />
</p>
<p>
Now wire up the BBB and the Pomona with your PSU.<br/>
Refer to <a href="bbb_setup.html">bbb_setup.html</a> for how to setup
the BBB for flashing.<br/>
<b>Note, the guide mentions a 3.3v DC PSU but you don't need this on the X60 Tablet:
if you don't have or don't want to use an external PSU, then make
sure not to connect the 3.3v leads mentioned in the guide;
instead, connect the AC adapter (the one that normally charges your
battery) so that the board has power (but don't boot it up)</b>
<img src="../images/x60t_unbrick/0011.JPG" alt="" /><br/>
Correlate the following with the BBB guide linked above:
</p>
<pre>
POMONA 5250:
=== golden finger and wifi switch ====
18 - - 1
22 - - NC ---------- audio jacks are on this end
NC - - 21
3.3V (PSU) - - 17 - this is pin 1 on the flash chip
=== CPU fan ===
<i>This is how you will connect. Numbers refer to pin numbers on the BBB, on the plugs near the DC jack.</i>
</pre>
<p>
Connecting the BBB and pomona (in this image, an external 3.3v DC PSU was used):<br/>
<img src="images/x60/th_bbb_flashing.jpg" alt="" />
</p>
<p>
Flashrom binaries for ARM (tested on a BBB) are distributed in libreboot_util. Alternatively,
libreboot also distributes flashrom source code which can be built.
</p>
<p>
SSH'd into the BBB:<br/>
# <b>./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512 -w yourrom.rom</b>
</p>
<p>
It should be <b>Verifying flash... VERIFIED</b> at the end. If flashrom complains about multiple flash chip
definitions detected, then choose one of them following the instructions in the output.
</p>
<p>
Reverse the steps to re-assemble your machine.
</p>
</div>
<div class="section">
<p>
Copyright © 2014, 2015 Francis Rowe <info@gluglug.org.uk><br/>
This document is released under the Creative Commons Attribution-ShareAlike 4.0 International Public License and all future versions.
A copy of the license can be found at <a href="../license.txt">../license.txt</a>.
</p>
<p>
This document is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See <a href="../license.txt">../license.txt</a> for more information.
</p>
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