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sonic-iso
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« Reply #320 on: August 31, 2009, 03:26:30 PM » |
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gyte looking at your pics more and more... i dont mean to sound like im bashing you bro but it looks very amateurish. that ide cable or w/e it is is NOT proper. get a ethernet cable cut it up and use the wires in that. atleast it will be shielded all together. plus depending on the brand of wire it will be copper which is REALLY good for transferring of data.
Uhm, what kind of conductor is used in ide cables? And as Blackaddr pointed out: UTP= Unshielded Twisted Pair (default network cable) STP= Shielded Twisted pair And could we please have some hires pictures of your setup?, i want to make the next xbox mod as nice looking as i possibly can... max im at work till 7 wont be home till 7:45 est when i get home il take pics of my setup and post them on here. |
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maximilian0017
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« Reply #322 on: August 31, 2009, 03:53:13 PM » |
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Error: 258 reading block 153
Ok, Your setup looks pretty solid, no obvious errors(have seen repair jobs by proffesionals that are far worse  ). Some tips: 1. Use J1D2.6 or J2B1.12 for the GND connection 2. Use single strand wire(solid core), less problems with single strands shorting something 3. Use heat shrink tube 4. Polling off 5. All programs closed while dumping, no Antivirus, NOTHING!!, pull out the internet cable(UTP ), check pc for spyware/virusses first etc, remove scanners etc. 6. if no printer installed please install a text only printer driver on lpt1 and reboot, else remove the printer driver from lpt1. 7. Use slightly smaller resistors eg. +-82, then +-56 (you can probably use 1/8W without problems(smaller in size) 8. Make sure there are no forms of electrical interference present, no fridge that powers on or wifi routers laptops etc., mobile phones etc, you get the idea. If you compare all the dumps that you made do you ever have the same error in the same place?, and how many dumps did you make?, are there differences outside the FF area? Differences in between 0x642600 and 0x64680 you can ignore as said earlyer. If you compare FF to BF it is only a 1 bit error... Maby Tiros or someone else could answer me this, are all the bad pages in NAND mapped out beforehand or are they marked bad if they are detected while writing/verifying(during update)? As the NAND can wear out over time, some form of correcting mechanism should be in place (in conjunction with ECC) This really is a difficult one, i hope a new cable setup will cure the problem but somehow i think something else is causing it (really hope not) |
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« Last Edit: August 31, 2009, 04:02:18 PM by maximilian0017 »
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maximilian0017
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« Reply #323 on: August 31, 2009, 04:01:35 PM » |
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*EDIT* Also, twisting wires in pairs only helps when the second wire contains a return path for the first wire, or is differential signaling. All wires in the LPT setup are singled-ended, so you would have to make each pair a signal and ground wire to get any significant benefit over ribbon cable.
And with 6 data wires that is not going to happen. Maby you could use db25.2 and db25.18 together as one pair, as db25.2(D1) will probably be 3.3v and the other one is ground, should help a little... |
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« Last Edit: August 31, 2009, 04:03:54 PM by maximilian0017 »
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Hoax
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« Reply #324 on: August 31, 2009, 04:08:23 PM » |
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Maybe he also could try to disable the printer polling from windows as said earlier ?
Maybe this is the reason for differences within each dump ?
@ GyTe -> Look some sites before, there was a registry trick to disable polling.. Maybe this will help
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Redline99
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« Reply #325 on: August 31, 2009, 04:11:02 PM » |
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You guys, please take this to a help or general discussion thread, it has no business here and is just making this thread cumbersome and bloated.
Soon I will have to start deleting posts here so save what you want to save tomorrow it might be gone.
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Where's Waldo
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maximilian0017
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« Reply #326 on: August 31, 2009, 04:12:33 PM » |
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Here it is: Personally i would CLOSE EVERY AND ALL PROGRAMS before reading/writing the NAND (Yes, even al the programs from the taskbar next to the clock!!) Germania posted a little kown fact that Windows XP polls the Paralel port from time to time for new printers, this could also interfere with the reading/writing the NAND. (knew that one just didnt think of it, Germania +1 ) You can make a regfile so you can easy disable polling: 1. Open Notepad and cut/paste the following text: Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Parport\Parameters] "DisableWarmPoll"=dword:00000001 2. Save the file as XPDisablePolling.reg 3. Doubleclick the new file and click YES to enter in the registry, dont forget to reboot. Done!! (tried to add a .reg or .txt file but it didnt stick  ) You guys, please take this to a help or general discussion thread, it has no business here and is just making this thread cumbersome and bloated.
Posted at the same time, sorry U R right, and message understood |
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« Last Edit: August 31, 2009, 04:16:47 PM by maximilian0017 »
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sandungas
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« Reply #327 on: August 31, 2009, 04:46:07 PM » |
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*EDIT* Also, twisting wires in pairs only helps when the second wire contains a return path for the first wire, or is differential signaling. All wires in the LPT setup are singled-ended, so you would have to make each pair a signal and ground wire to get any significant benefit over ribbon cable.
I was thinking in what you explain this last days I think that none of us are shielding correctly the wires (at least... the people that have uploaded pics... me included) If im not wrong... Each wire must be shielded with ground... and there must be another shield covering all them In the DB25 connector there is a ground (the metal border of the connector) ... and in the other extreme of the LPT cable there is another ground (point J1D2.6) All shields must be soldered to that points, right ? Also... we dont need a wire for J1D2.6 because we can use the shield for that Please, correct me if im wrong Im saying this because what you explained... and because "SATA data" cables are build this way |
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« Last Edit: August 31, 2009, 05:05:25 PM by sandungas »
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snarby
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« Reply #328 on: August 31, 2009, 05:38:18 PM » |
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Hoax, I used your idea - awesome!  |
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« Last Edit: August 31, 2009, 05:46:48 PM by snarby »
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Blackaddr
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« Reply #329 on: August 31, 2009, 06:13:16 PM » |
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*EDIT* Also, twisting wires in pairs only helps when the second wire contains a return path for the first wire, or is differential signaling. All wires in the LPT setup are singled-ended, so you would have to make each pair a signal and ground wire to get any significant benefit over ribbon cable.
I was thinking in what you explain this last days I think that none of us are shielding correctly the wires (at least... the people that have uploaded pics... me included) Im saying this because what you explained... and because "SATA data" cables are build this way Shielding helps but is by no means required for this type of interface and the speed it runs at. Using ribbon cable should be just as good as ethernet cable, I don't want people to spend a lot of time on wire configurations that are effectively equivalent. The more times you solder your mainboard, the more times you risk damaging it by lifting a pad, etc. As long as your cable is fairly short (less than 24") you should have no problems with voltage drop on the wires (like on LONG cables) or interference from lack of shielding. NandPro is sending serial data VERY slow by comparison to SATA which uses high speed differential signaling. Sorry to the mods if my posts have "cluttered' the thread. We probably need the "trouble shooting" messages moved to another thread. |
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360 Info Collection -> http://www.xboxhacker.org/index.php?topic=12940.0Do not take anything I say as gospel, use your own judgement, make your own decisions. Please pay attention to which sub-forums are for Research and Technical discussion. The following are NOT for help with and troubleshooting existing hacks. - Hardware (Technical) - DVD-ROM Drive and Media - Hard Disk - Software (Technical) |
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GyTe
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« Reply #330 on: September 01, 2009, 02:21:49 AM » |
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Thanks to everybody for the information : @ Hoax - Glad to see that I'm not alone. I have made the first mod with spare material that I had at home but there was something strange that avoid to retrieve the nand dump in the right way. I hope to be more "lucky" with the new materials / solder. I'm going to copy your idea of the serial connector under the hard-disk bay About the polling I've already tried to disable but it haven't fix the problem. @ maximilian0017 - I'm going to copy the idea of Hoax so I have changed all the cable for the motherboard solders. For the "external" cable, I have used a brand new lan cable Cat.5e. About the bad pages, I have already checked, and they're outside the 0x642600 and 0x64680 range. During all my test I have closed everything.... The only way that I can follow now it's to complete the solders with the new materials and try to install a text printer (thanks maximilian0017). Otherwise I can try also to remove the Diode / remove the resistors... I'll update this thread with more information and pictures as soon as possible. |
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maximilian0017
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« Reply #331 on: September 01, 2009, 08:08:27 AM » |
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The only way that I can follow now it's to complete the solders with the new materials and try to install a text printer (thanks maximilian0017). Otherwise I can try also to remove the Diode / remove the resistors...
Please post your findings in the general help area, we will find you there. Removing diode will only work if it's the wrong kind, but as stated before an 1n4148 should be ok, please dont remove the resistors as it might damage your xbox, you can try lower value's 82,56, etc with almost the same effect. Thre lower value resistors are the most interesting thing to try after the new cable setup. |
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GyTe
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« Reply #332 on: September 01, 2009, 08:28:34 AM » |
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The only way that I can follow now it's to complete the solders with the new materials and try to install a text printer (thanks maximilian0017). Otherwise I can try also to remove the Diode / remove the resistors...
Please post your findings in the general help area, we will find you there. Removing diode will only work if it's the wrong kind, but as stated before an 1n4148 should be ok, please dont remove the resistors as it might damage your xbox, you can try lower value's 82,56, etc with almost the same effect. Thre lower value resistors are the most interesting thing to try after the new cable setup. Well... I'll follow your advice... For now I'll try to re-solder everything and test it... Otherwise I'll try to lower the resistors value Thanks |
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l_oliveira
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« Reply #333 on: September 01, 2009, 11:05:35 AM » |
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I'm using 40 centimeters long wires from the console to a DB25 male connector. From that a meter long LPT extension cable.
I am a lucky bastard with a Asus A8N deluxe motherboard whose LPT port is 3.3v signaled. I hooked all the wires straight to the LPT port and it flashes like a monster.
I believe the best path for troubleshooting this is firstly measure the voltages on your printer port.
If it's 3.3v resistors and the diode might make your life miserable instead of giving you any help.
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 It's a Rough World |
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sonic-iso
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« Reply #334 on: September 01, 2009, 01:02:54 PM » |
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oliviera mine was 3.3v i didnt need the resistors... but the diode stopped me from having ANY bad pages...
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Cpasjuste
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« Reply #335 on: September 01, 2009, 01:09:22 PM » |
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Well, you should maybe have done this the other side, if you want to put an hdd, your screwed up ... http://mydedibox.fr/_stuff/360/Hoax, I used your idea - awesome! |
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Hoax
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« Reply #336 on: September 01, 2009, 02:56:05 PM » |
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Well, you should maybe have done this the other side, if you want to put an hdd, your screwed up ... http://mydedibox.fr/_stuff/360/Hoax, I used your idea - awesome!
... image removed ...
Mine fits perfect in there... Plugging a HDD is no problem for me. The connector ends with the grey plasticcover. If someone has a problem to plug a HDD onto it, just put a ?grommet? between the screws (which you may need to short) and the metal case..This should help!  |
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« Last Edit: September 01, 2009, 03:00:54 PM by Hoax »
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snarby
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« Reply #337 on: September 01, 2009, 05:00:50 PM » |
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Yes, fits perfectly - very clean mod. Once the hard drive is connected you cant even see any connection. Love it  |
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sjbwiii
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« Reply #338 on: September 01, 2009, 10:44:13 PM » |
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keep getting - Error: 250 Reading Block 7 - on the 5th read now.
my concern is when i flash NewXell.bin - is that to close to the start of the nand?
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duggyuk
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« Reply #339 on: September 04, 2009, 05:47:44 AM » |
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I have an issue... laptop was dumping nand without issue. dumped 3 times (once using on mode and then again to verify). dump 2 and dump 3 look like what I Expect, nand tools seems to check out, dump1 seems "damaged".
Anyway issue is that the laptop (and another PC too) no longer dump. I know resistors should have been used but its obviously too late for that now. Oddly xbox functions just fine. So i have a working (boots all the way to nxe dash) xbox, that wont talk over parallel jtag (says firmware controller not found?!). Replaced the wiring, from printer cable, then to cat5E and now kynar, no use.
Any thing I can check/replace thats related to reading the nand over the jtag?.
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