If You Have a SHARP TSOP:

Join these 2 points with some wire on the back of the motherboard:

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And follow the same solder points for HYNIX / HYUNDAI, ST, and WINBOND, and same points with the switch. The SHARP TSOP has the exact same connections as a HYNIX / HYUNDIA, ST, and WINBOND, though it just needs this 1 more connection.

If you have an XBOX V1.2/1.3/1.4/1.5 Follow this:

The solder points for a V1.2/1.3/1.4/1.5 XBOX are extremely easy. Much easier then the V1.0/1.1 XBOX Consoles. There is only one downfall: No switch. Only bad if you want to use XBOX LIVE, otherwise your lucky.

Fire up your soldering iron, and open up your XBOX. There are 6 screws on the bottom of it. Once you have the top cover off, unplug the IDE and Power from your XBOX Hard Drive. Then take the screw out, to free the Hard Drive. Next, take the 2 screws out of the DVD-ROM Drive (in the front left and right corner) Then lift the drive up, and take out the IDE and yellow cable from your DVD-ROM Drive. Identify what TSOP you have: ST, WINBOND, or HYNIX / HYUNDAI.

Now the good thing about V1.2/1.3/1.4/1.5 Consoles are that you don't even have to take out the motherboard. Just bridge these 2 sets of points:

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Ignore the green circle, and focus on the 2 red circles with the yellow arrow. Simply bridge both points in the circle together, making sure they are touching each other. Done.

Put your XBOX Console back together, everything except the top lid. You are now ready to flash.