GENERAL Nand Dumping - Bad Blocks

[honeyjames]

Hello,


I have the trinity motherboard and have been dumping the nand so I am all set for when the coolrunner comes out and have come accross an error while dumping the nand.

I have dumped the nand 18 times and its the exact same reading block error. I have also resoldered all the wires twice using plenty of flux etc. the soldering looks good. I have not been able to get a clean nand dump. Is there anything I can do? or shouldnt I be worried?

btw I am using the nand-x (great product!)

Many thanks in advance :smile:

---------- Post added at 14:10 ---------- Previous post was at 14:04 ----------

Oh and I have compared all the nands in NandCompare and its saying (depending on which dumps i am comparing) 1 or 2 non-matching blocks found. I have never experienced this all the times I have dumped nands on xboxs. Cant figure it out.

 

[manwithoutname]

If the same bad block shows in all dumps then that's fine, however if nandcompare is telling you that you've got mismatching blocks then I would recheck the soldering and specially the ground wire.

Do not proceed any further if you still got mismaching blocks, that'a my advise for you.

 

[honeyjames]

Thanks for the reply manwithoutname.


I have resoldered the ground wire (yellow) and all the others many times now and nothing has worked keep getting 1 or 2 non matching blocks on nandcompare.

Heres a few pictures of the soldering work. (taken on my iphone so not the best, i will try and find my camera when i get some time and take better ones.)

Hope that someone can spot where I am going wrong.


Many thanks!

 

[honeyjames]

Heres some better pics using my camera.

 

[BL4K3Y]

Those points look pretty solid to me, I can't see that being the issue. Maybe try an older version NandPro (20d perhaps?).

 

[honeyjames]

Thanks for the reply blakey8.

Yea thats what i thought, must of resoldered about 6 times, tryed lead and lead free solder and even desoldered my nand x cable from my jtag jasper and still no luck. Just cant figure it out. I have tryed version b,d and e. All saying the same thing. :facepalm:

 

[Martin C]

Bad blocks are common...

Open the dump in 360 Flash Dump Tool and it should tell you if the blocks are being remapped.

 

[honeyjames]

Thanks for the replys.


heres a screenshot of what it says in 360 flash dump tool.

 

[Martin C]

So you're all set

As long as each bad block is remapped, it's a good dump.

 

[honeyjames]

oh i thought it was a bad dump cause I was getting non-matching blocks on nandcompare, didnt have 1 dump that was good. all was saying 1 or 2 non matching.

 

[honeyjames]

so do I have to do anything with the dump or is it safe to use when the coolrunner is out to do the glitch hack?

 

[BL4K3Y]

Once you have your dump, it should be good to go with the glitch. Follow the tutorials on how to alter your NAND accordingly.

 

[honeyjames]

First of all thanks for all your help. Much appreciated.

One last question.

What will happen if after the glitch hack has been done and say I wanted to flash back with the original nand dump, although this original dump has bad blocks in it, will it still work?

 

[Martin C]

Yes - there will be nothing more to do as your dump is from 0x000 - 0x3FF, meaning you've already saved the bad block remapped data.