Soldering FT1U2

[Painstrider]

Ok so on first attempt like many others I messed up DB1F1, read about alternate points and good technique/how you should go about soldering the alternates. That all went pretty well as i'm pretty sure I got a solid connection to FT1U2, hot glued the wire to a part of the board without trace and it looks pretty stable. Now my question is, should I be soldering this to J2D2 on the top of the board or are there alternate points for J2D2 on the bottom? I think it would be neater if I were to keep all the JTAG wiring on the bottom of the motherboard, would that be correct? I'm also scared that if I thread it through one of the holes to the top of the board, that hole could be used for a screw later when putting the casing back on and I could break a connection.

I found this diagram http://img191.imageshack.us/img191/5145/db1f1ft1u2alternative.jpg and the point looks similar to J2D2, I think it is right beneath it. Would that be considered an alternate point? Could I get away with soldering everything how I was meant to on top of the board, but on that point? If I do end up having to thread it through to the top of the board, which holes would be considered safe (as in they do not get occupied by screws)?

[luna_s]

I soldered all my jasper points on the bottom of the board - works fine as J2D2 is mirrored underneath
makes it handy for the alt j2.d2 too

[Painstrider]

So the mirror underneath that's shown in the diagram is an alternate to J2D2 and will work if I just solder exactly like on top? Sorry for the extra post but I wasn't sure if the J2D2 alternate you were talking about is the one shown in the diagram.

[luna_s]

all the wiring that's done on the top of the board can also be done on the bottom, i checked with a meter beforehand

e.g the j2d2.4 j2d2.7 wire can be done underneath

made more sense to me to do it like this and its tidier imo

basically the j2d2 points pass throo the board

[Painstrider]

Ok so I soldered it all up but now i'm having problems dumping the KV and config. I'm following this guide http://docs.google.com/View?id=dnfmv5h_186pp2zddm, i'm at the stage where you dump the KV and config but every time I do it, there is a massive amount of differences when I compare the dumps. Also when following this guide doing the step 2 dumps, they were both identical but now after the JTAG wires I can barely get them close to each other. Could it be the soldering of the JTAG wires that caused this? I checked and it did not look like there were any bridges on any of the solder joints, what is the most common cause for this problem and how can I fix it?

[Painstrider]

After fiddling around with it a bit, I ended up getting identical dumps for everything so I think maybe something was shorting it out. Now i'm up to the part were I boot the 360 and hopefully it boots into xellous. The problem is it's not booting, I tried plugging in a plug N play wireless controller into the back usb port as stated in the walkthrough as well as pressing the power button at the front, but it just doesn't boot at all. Is there anything specific that needs to be connected back to the motherboard to ensure it can boot? I think the other possibility is the soldering, correct? I checked and it doesn't look like anything is bridging and causing shorts, if the LPT works does that mean that it should be able to boot?

[ReverseAffect]

xellous boots with the eject button...

[Painstrider]

In the guide it says to use the power button, i'll try connecting up the dvd drive now. Wouldn't it still boot up though if I used the power button, just not into xellous? Also, should I connect the fans back onto the mobo as well as the heatsink?

EDIT : Ok now I know i'm a Fing idiot. I just checked the flash config and its a jasper 16mb while all this time I had assumed it was a BB nand. I've been using the bb nand commands from that tutorial, does that mean i'm completely f***ed? I wrote the wrong xell to the board (BB not 16mb), are all the backups I have created sufficient to continue or am I basically left with a brick because I have the wrong addresses for backups? Should I just restart that step and do the 16mb commands?

[Arakon]

A friend of mine had the same issue once, reading a 16 MB jasper nand as 512MB. what you do:

nandpro bbdump.bin: -r16 properdump.bin

it will extract 16 MB from your "bad" dump and you can use that as a proper backup. nandpro luckily just loops when you tell it to dump a 16 mb nand as 512, so basically you get 32 16MB dumps in one file.