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  1. Thread: LT1 UnBrick

    by kur4o
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    42

    Great initial write up. I am eager to test, but...

    Great initial write up. I am eager to test, but can`t sacrifice a pcm now.

    It will be best to get a header with external header, for emergency revive of pcm. So these pins are at the processor...
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    That is what you ask for.

    That is what you ask for.
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    When you change only vin you have to turn ign...

    When you change only vin you have to turn ign off, B+ on for at least 30 seconds for the change to take effect. If you are cloning the changes are saved immediately.

    156 Os have 3 different...
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    I just tested the eside vpp apply and it works...

    I just tested the eside vpp apply and it works flawless. It reads both voltages vpp and ign. Now I have to fix a vpp_remove eside one that will allow separate side flashing.
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    In-Tech bins have a good serial 2EB2K9S62010 and...

    In-Tech bins have a good serial 2EB2K9S62010 and the vin seem solid. Just flash it in clone mode and see if hp s....r is happy with it.
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    If serial is derived by vin you are screwed,...

    If serial is derived by vin you are screwed, since nobody knows the algorithm. Of course hp s.....r somehow got it and check it for valid combo.

    You can fix the serial and vin in hex editor and...
  7. Thread: 93 V6 flash

    by kur4o
    Replies
    77
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    2,868

    There was an error in spark conversion. Try with...

    There was an error in spark conversion. Try with the fixed definition.
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    I did some digging and managed to find some bins...

    I did some digging and managed to find some bins based on google vins.

    The 21 is supposed to be from 97 ws6
    The 41 is regular 97 transam
    both manual.

    You can do a hex compare and can be...
  9. Replies
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    Here is modded vpp for eside. Someone willing to...

    Here is modded vpp for eside. Someone willing to upload to eside and report results.
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    If there is no space just use what is possible,...

    If there is no space just use what is possible, In the end it will be much easier to add different reading format on the app side than mod the pcm side to cover the existing one.
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    That is great. I feel confident it will work at...

    That is great. I feel confident it will work at the end.

    The channel 0 matches the ign lookup on eside and channel 1 is stored once but never used, so it is likely the vpp circuit there.

    I will...
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    Can you post the code, I will try to adapt it for...

    Can you post the code, I will try to adapt it for 94-95 eside.

    I need mostly the port G config and the AD lookup for ign voltage and vpp voltage.
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    It looks like it will work in case the hardware...

    It looks like it will work in case the hardware links are there.

    On both 94-95 and 96-97 pcms the vpp enable bit is at tside $1800 bit $80,
    I checked the eside diss and 1800 $80 is not used...
  14. Thread: 93 V6 flash

    by kur4o
    Replies
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    2,868

    Glad to hear it is working as expected. You are...

    Glad to hear it is working as expected.
    You are welcomed for any questions and suggestion.
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    It is f4=tside and e4=eside.

    It is f4=tside and e4=eside.
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    The read format being used request f4 5c...

    The read format being used



    request
    f4 5c 06 [02 00] [20 0b] [20 00] [xx]

    [02 00]=load address
    [20 0b]=code bra to
    [20 00]=start address of data to be read
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    The problem can be in vin change. Since the pcm...

    The problem can be in vin change. Since the pcm gets unlocked and than if any mode 5 is send the pcm will take it and likely crash and will need reset to wake up.
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    I have a version that will work on xp sp3. Just...

    I have a version that will work on xp sp3. Just need to compile the latest source and will post it.
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    I have traced the vpp pin and it is common for...

    I have traced the vpp pin and it is common for the 2 sides. When it is turned on both sides get the voltage and the trigger pin is commanded by tside. Also the tside reads the voltage.

    An easy...
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    Why don`t just make a bootstrap flash mode in...

    Why don`t just make a bootstrap flash mode in flashhack and collaborate the effort with Tom H for easy recovery.

    It is still serial comm and the same ftdi adapters can be used. The bootstrap...
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    That brings a good point. The vpp is applied by...

    That brings a good point. The vpp is applied by tside only, I guess the relay transistor is wired there and the voltage goes to both sides. Now can we apply vpp from tside, while flashing eside. I...
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    I guess you have some crap 3.3v serial cable. I...

    I guess you have some crap 3.3v serial cable. I got one batch that hardly worked at all.
    The best ones that work flawless are ftdi based and look like this.

    Try some other standard baud rate or...
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    All 94-95 files and pcms are interchangeable. On...

    All 94-95 files and pcms are interchangeable. On the average bin you want to parse, first part is tside and second part is eside. there is also ram 0-2000 area in the files. You can cut these and...
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    I vote for the slowest most reliable option for...

    I vote for the slowest most reliable option for recovery. $400 bytes of ram is plenty enough. Anyway the original code is set to use 0-1ff as comm loop 300-on as buffer for write message and 200-2ff...
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    It doesn`t get response on the reboot request....

    It doesn`t get response on the reboot request. Than the pcm reboots and response on second upload request that is locked. Flashhack assumes it lost comm and tries to unlock pcm. It manages to unlock...
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