confusing nand reads

[slipping65]

.. and I'm back already! *hangs head in shame*

a day or two ago I took nand reads , 2 of them two seperate times and all 4 of them compare the same.

So now after toying with my coolrunner and soldering connections to making it able to boot. I've put the board back on my desk and tried to read the nands once more.

I took 3 new readings and all 3 compared the same.
they don't match the 4 I took the other day

jrunner comparing the differences shows this
Comparing...
0x0027
0x0028
0x0029
0x002A
0x002B
0x002C
0x002D
0x002E
0x0039
0x003A
0x01A0
0x01A2
0x01A4
0x01A5
0x0205
0x0206
0x0207
0x0208
0x0209
0x020A
0x020B
0x020C
0x020D
0x020E
0x020F
0x0210
0x0211
0x0212
0x0213
0x0214
0x0215
0x0216
0x0217
0x03D9
0x03DA
0x03DB

all the nands open in nandhealer and likewise nandhealer shows a mismatch between the days.

point me in a direction please!

 

[WestCoastConsoles]

Was the console turned on in between the NAND reads

 

[freegetter]

did you write ecc after you dumped your nand the other day if so then that is the reason

 

[big_ted]

connections to making it able to boot. I've put the board back on my desk and tried to read the nands once more.

That'll be why once you boot it writes to the nand and the result is it different to the one before booting the console.

Ted

 

[slipping65]

haha wow , ok thank you I understand it all more now.

a question a bit out of curiosity then, are both and potentially future nand readings all safe ? or once I turn the console on is the nand somehow no longer as usable for manipulating purposes?
sorry I'm not exactly sure how to ask that question.

 

[Martin C]

You can reuse an old NAND dump PROVIDING you didn't update the console after it was taken. The LDV would change as part of a system update, rendering the older dumps (without modification) unbootable.