Falcon board - efuse + jtag help

[<<Xyper>>]

Hi guys, I need some install advice. I've got my nand-x setup. I've been following the tutorials and installed the jtag connections as per M AzeeM K tutorial. The problem for me is trying to boot into Xell. I'm getting an E79 error with 1 red light on section 3.

First off to check, if my efuse is bridged via the solder points as per Martin3912, it wouldn't affect the jtag/flashing, would it?

Secondly, if nandpro comes up with a 202 programming error on block 3EF would that affect the flash? With the block, I do not have an error code, just its location (3EF), is there anyway to remap it without the error code? I ask this as this is the same message I get when flashing/writing my stock/old nand image.

I've tried playing with the jumper settings to no avail. I can recover by flashing to my old nand image with no problems. Any help would be appreciated, Thanks!

 

[Martin C]

E79 is almost *always* wiring.

Post a pic of your install, as well as your bridging for e-fuse protection.

Did you check in 360 Flast Dump Tool if the bad block at 3EF is being re-mapped? You didn't say either way.

 

[<<Xyper>>]

I don't think the block is being remapped. I'm not sure though, when reading in nandpro the error is 250 reading block 3EF, when writing is 202 programming block 3EF. Degraded doesn't show any remapped blocks. I don't know how to get 360 flash dump tool to check for remapped blocks.

I lost one of the QSB's from the nand package, so I substituted it with a nandflasher QSB I had lying around (picture 2), and I have an hybird kit installed since I was removing my MB anyway. No RRoD originally.

 

[Martin C]

So you've gone for AUD_CLAMP. Did you make sure you're using the AUD_CLAMP SMC for XeLL?

Without it, you won't boot.

Just open the dump in 360 Flash Tool - if there are identified bad blocks, you'll see an extra tab on the right. If degraded is not showing any, you're probably ok.

If you get E71 down the line, you might need to manually relocate 0x3EF to 0x3FF.

 

[M AzeeM K]

I am pretty sure its the Jtag wiring that is causing the E79 because the soldering in the pics doesn't look good.

 

[<<Xyper>>]

Should I redo the solder points again? Is there a way to check the points using a multimeter? I'm guessing there is not supposed to be a connection between the solder points? Specifically, between jtag points 1 and 2 on the J2D2 socket, I'm getting a connection between the 2 points unsoldered, did I burn through the board?

I used the aud_clamp DVD_tray option in Jtag tool, is that sufficient? I will be trying the manual method again shortly

 

[M AzeeM K]

^ If you're following my tutorial, then Yes, Aud_Clamp + DVD_Tray option is the correct option to select in Jtag Tool.

As for the soldering, I have to say Yes. It is likely that there is some problem with the soldering and it would be much better if you removed the solder, cleaned the points and then soldered again using a 15W soldering iron and using flux to make some clean solder connections.

 

[<<Xyper>>]

I've redone the solder points, checked using multimeter to the back of the board. Pins 1 and 2 showing 1414Ohm resistance on my 2000ohm setting on the multimeter. I hope pin 1 is the ground, if not... All other points are isolated. Checked on the back of the board as well, ie: one probe on the top, other probe on the back, the solder points are good.

 

[M AzeeM K]

^ So, you're still having E79?

 

[xbox360 hacker]

when you did your soldering did you use flux ??

 

[<<Xyper>>]

Yea, still getting E79, is it true that if jtag wiring was done right, you cannot flash back to your original nand?

No, I didn't use flux, I know I should but it seems that I usually get the connections right, I don't think it makes a difference other than easier connections.

 

[M AzeeM K]

^ You can write to the NAND irrespective of the Jtag connections. And you can also write back your original NAND image, and it will work.

Well, still E79....How about you post some pictures again? Some nice ones, OK ?

 

[<<Xyper>>]

Yes, I am still having E79, I followed your tutorial even using the manual SMC update, didn't work. I can still flash back to my original nand.

No, I didn't use flux, which probably explains the burn marks, but I had originally tried a direct connection (no QSB) and had to remove it. I'm confident that I got the points soldered tight though... hang on for the pics lol...

 

[Martin C]

there's only one area you need to be checking for the wiring:

J2D2.1 to OPEN_TRAY
J2D2.2 to AUD_CLAMP
J2D2.4 -> J2D2.7 - should be a resistance between the two points.

When testing for continuity, pick the points on the QSB AFTER the diodes - don't use the points themselves.

 

[xbox360 hacker]

flux might make all the difference as it will give you perfect connections flux is the most important thing about any type of soldering

 

[<<Xyper>>]

Okay,
J2D2.1 to OPEN_TRAY - continuity confirmed one way
J2D2.2 to AUD_CLAMP - continuity confirmed one way
J2D2.4 -> J2D2.7 - should be a resistance between the two points. - the resistances are off when the jumper is on 330 I'm getting a 270 reading on my multimeter and jumper on 470 I'm getting 360. Is this normal?

 

[<<Xyper>>]

Well, now I took one step backwards, nandpro can't detect a flash controller. I decided to remove the efuse solder bridge to update to 7371 dash. So I restored my original dash and usb updated it to 7371. I wanted to try flashing again and now I am stuck.

edit: I changed the pin direction on the J2B1 header and now I can read my nand, tried flashing again but the E79 error is still there

 

[Martin C]

Well, now I took one step backwards, nandpro can't detect a flash controller. I decided to remove the efuse solder bridge to update to 7371 dash. So I restored my original dash and usb updated it to 7371. I wanted to try flashing again and now I am stuck.

edit: I changed the pin direction on the J2B1 header and now I can read my nand, tried flashing again but the E79 error is still there

What do you mean by 'changed the pin direction on the J2B1 header'? From what you're saying, you plugged the cable in back to front?

Also, can you check for continuity between the spliced DVD cable and the point on the motherboard?

These points should be linked so you should get continuity.

If you still get E79, you'll need someone with better soldering skills and/or a better eye. It's possibe one of the traces on J2D2 has been damaged. Unfortunately the pics don't show that level of detail.

 

[<<Xyper>>]

Yes, as I am using a nandflasher module B for J2B1 , the pins do not fit exactly, they can go in either way. Originally, I was following the trace compared with the nandx QSB, eg: blue to blue, green to green. For some reason, after the update, that didn't work. I had to change it around eg: I fit the pin header in the other way, blue to green etc. That worked out as I managed to read and write the nand again.

I spliced/soldered red wire directly to the dvd cable as per option B in the tutorial, will check the underside for continuity again tomorrow. If the traces on J2D2 were damaged would it still boot to stock/original nand?

Could it be possible that I have one of those picky nands that resist flashing?

 

[M AzeeM K]

^ Yes, the original NAND image should boot without any problem.

As for the NAND being picky, no. It is not one of those NAND, otherwise, you would only have gotten the Controller Not Found error no matter what you did.