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Author Topic: NCDx security coding  (Read 19679 times)

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TheBoy

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Re: NCDx security coding
« Reply #75 on: 12 October 2008, 22:23:56 »
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Try the dump I sent, as I think I may have disabled the pairing !!

 :-/
I will try that tomorrow, a few too many beers to focus on small components tonight  :-[
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Dave DND

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Re: NCDx security coding
« Reply #76 on: 12 October 2008, 22:29:33 »
No worries, and remember if you also put back the original dump you sent me, the unit will revert to its previous state also.

Did the dump/CDC3 you sent originate from a NCDC setup though?

Or CCRT700 ?
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Re: NCDx security coding
« Reply #77 on: 13 October 2008, 08:59:23 »
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No worries, and remember if you also put back the original dump you sent me, the unit will revert to its previous state also.

Did the dump/CDC3 you sent originate from a NCDC setup though?

Or CCRT700 ?
The dump I sent you originated from NCDx/ccr2008(vectra) series.  The dump you sent me originated from ccr600/ccrt700 so didn't pair - similar error to if the CDC isn't plugged in.

I'm pouring over the dumps, and wondering if I change the part number on your dump to match the part number required for NCDx series...  ...whats the worse that can happen, apart from it all smokes up ;D

Also, now got a problem with my CID being in a paired state, and having the hump talking to tech2, so need to fix that first  :'( - it happened once before, seems it needs to be left disconnected for an hour or 2....
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Dave DND

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Re: NCDx security coding
« Reply #78 on: 13 October 2008, 09:08:56 »
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The dump I sent you originated from NCDx/ccr2008(vectra) series.  The dump you sent me originated from ccr600/ccrt700 so didn't pair - similar error to if the CDC isn't plugged in.

Yes, the one I sent back was from an Unpaired CCRT700 that has had the code disabled - Usefull to know it wouldn`t work, didn`t think it would.

Quote
I'm pouring over the dumps, and wondering if I change the part number on your dump to match the part number required for NCDx series...  ...whats the worse that can happen, apart from it all smokes up

Never tried that - I have only really plyed around with the original dumps and data, never tried to make a dump think it was something else though - Its not going to do anything worse than conflict with the head unit if it doesn`t work, no worse than the dump I sent previously - and you can always revert back to original dump again. If you think you can change the part number, certainly no harm in trying.

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TheBoy

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Re: NCDx security coding
« Reply #79 on: 13 October 2008, 09:10:18 »
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Quote
The dump I sent you originated from NCDx/ccr2008(vectra) series.  The dump you sent me originated from ccr600/ccrt700 so didn't pair - similar error to if the CDC isn't plugged in.

Yes, the one I sent back was from an Unpaired CCRT700 that has had the code disabled - Usefull to know it wouldn`t work, didn`t think it would.

Quote
I'm pouring over the dumps, and wondering if I change the part number on your dump to match the part number required for NCDx series...  ...whats the worse that can happen, apart from it all smokes up

Never tried that - I have only really plyed around with the original dumps and data, never tried to make a dump think it was something else though - Its not going to do anything worse than conflict with the head unit if it doesn`t work, no worse than the dump I sent previously - and you can always revert back to original dump again. If you think you can change the part number, certainly no harm in trying.

Unless you have an unpaired ncdc dump?  I guess if you had, you would have sent it ;D
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Dave DND

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Re: NCDx security coding
« Reply #80 on: 13 October 2008, 09:31:17 »
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Unless you have an unpaired ncdc dump?  I guess if you had, you would have sent it  

 ::)
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Re: NCDx security coding
« Reply #81 on: 13 October 2008, 09:33:45 »
BTW  CCR600 and CCRT700 use different dumps also, so it does look as though each scenario of CDC3/Pairing uses a different dump although keeps the code data in the same memory location.
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Re: NCDx security coding
« Reply #82 on: 13 October 2008, 10:06:17 »
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BTW  CCR600 and CCRT700 use different dumps also, so it does look as though each scenario of CDC3/Pairing uses a different dump although keeps the code data in the same memory location.
CCR600 and CCRT700 look to be same 'part' (I know they are all same part), with Tech2 setting the specific config.  NCDR1x00/NCDC201x/CCRT2008(Vectra) seem to be same 'part', again with tech2 deciding which one is used.
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Marks DTM Calib

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Re: NCDx security coding
« Reply #83 on: 13 October 2008, 20:27:13 »
So which chips do we think are storing the info on the NCDC head unit.

I have the following options:
NEC D78P058GC - An OTP Microcontroller - Outside bet being an OTP!
Microchip 24LC16(B) - 16K I2C Serial Prom - Gotta be a favourite and right next to the microcontroller!


There is then

1 off AM29LV200 - 2M Flash device associated with the GPS device (from motorola)
2 off AM29LV160 - 2M Flash device associated with the HD6417709 microcontroller
HD6417709 - RISC Microcontroller......this is asociated with the massive quantity of flash above!
« Last Edit: 13 October 2008, 20:32:21 by Mark »
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Re: NCDx security coding
« Reply #84 on: 13 October 2008, 20:50:23 »
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So which chips do we think are storing the info on the NCDC head unit.

I have the following options:
NEC D78P058GC - An OTP Microcontroller - Outside bet being an OTP!
Microchip 24LC16(B) - 16K I2C Serial Prom - Gotta be a favourite and right next to the microcontroller!


There is then

1 off AM29LV200 - 2M Flash device associated with the GPS device (from motorola)
2 off AM29LV160 - 2M Flash device associated with the HD6417709 microcontroller
HD6417709 - RISC Microcontroller......this is asociated with the massive quantity of flash above!
Not looked at HU yet - trying to find existing code on cdc unit (then I can get code for my lot in MV6) - but the 2416 has to be favourite, seeing as thats what I'm attacking on the cdc unit.  And can be prog'd in situ :y, which saves a lot of hassle ;D
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Re: NCDx security coding
« Reply #85 on: 13 October 2008, 20:52:22 »
Haven't looked that hard at CID yet.

Remember, HU and CID will need reprogramming if you don't know code.  CDC will work, but remove from cdc from HU and cid config, pair, then add CDC back in.
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Re: NCDx security coding
« Reply #86 on: 13 October 2008, 21:05:55 »
From units I have here,

NCDC2013  with  D78P058GC   uses  24C64 smd + 24LC16 to store data

whilst

NCDC2015  with  NEC HS9938-02  uses 24LC16 smd to store data

Both appear to be encrypted.
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Re: NCDx security coding
« Reply #87 on: 13 October 2008, 21:25:57 »
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Quote
The dump I sent you originated from NCDx/ccr2008(vectra) series.  The dump you sent me originated from ccr600/ccrt700 so didn't pair - similar error to if the CDC isn't plugged in.

Yes, the one I sent back was from an Unpaired CCRT700 that has had the code disabled - Usefull to know it wouldn`t work, didn`t think it would.

Quote
I'm pouring over the dumps, and wondering if I change the part number on your dump to match the part number required for NCDx series...  ...whats the worse that can happen, apart from it all smokes up

Never tried that - I have only really plyed around with the original dumps and data, never tried to make a dump think it was something else though - Its not going to do anything worse than conflict with the head unit if it doesn`t work, no worse than the dump I sent previously - and you can always revert back to original dump again. If you think you can change the part number, certainly no harm in trying.

Part number alone doesn't send it to ncdc mode.  Will have to try again.  Again, soldering iron is not to be used tonight due to and outting with Stella ::)
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TheBoy

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Re: NCDx security coding
« Reply #88 on: 13 October 2008, 21:33:39 »
Quote
So which chips do we think are storing the info on the NCDC head unit.

I have the following options:
NEC D78P058GC - An OTP Microcontroller - Outside bet being an OTP!
Microchip 24LC16(B) - 16K I2C Serial Prom - Gotta be a favourite and right next to the microcontroller!


There is then

1 off AM29LV200 - 2M Flash device associated with the GPS device (from motorola)
2 off AM29LV160 - 2M Flash device associated with the HD6417709 microcontroller
HD6417709 - RISC Microcontroller......this is asociated with the massive quantity of flash above!
I reckon CID is possibly on 93C56 (that sounds invalid - but both Mrs TheBoy and I reckon thats what it says).  On middle board.  I'll PM why I think its that chip if you're interested.
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Dave DND

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Re: NCDx security coding
« Reply #89 on: 13 October 2008, 22:24:55 »
Quote
Quote
So which chips do we think are storing the info on the NCDC head unit.

I have the following options:
NEC D78P058GC - An OTP Microcontroller - Outside bet being an OTP!
Microchip 24LC16(B) - 16K I2C Serial Prom - Gotta be a favourite and right next to the microcontroller!


There is then

1 off AM29LV200 - 2M Flash device associated with the GPS device (from motorola)
2 off AM29LV160 - 2M Flash device associated with the HD6417709 microcontroller
HD6417709 - RISC Microcontroller......this is asociated with the massive quantity of flash above!
I reckon CID is possibly on 93C56 (that sounds invalid - but both Mrs TheBoy and I reckon thats what it says).  On middle board.  I'll PM why I think its that chip if you're interested.

Yes, 93C56 on middle board is correct   :y

If it helps, it can usually be read / written to in circuit without any problems. I do tend to program as an ATMEL device instead of ST though when doing this
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