18F4550 programming failed using PICkit4 while verifying "User ID memory"


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  1. #1
    Join Date
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    Question 18F4550 programming failed using PICkit4 while verifying "User ID memory"

    Any idea what it's crying about?

    Name:  18F4550 verify failed.jpg
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    I had to slow the programming speed to SLOW or else I'd get speeding errors.

    Program, configuration and EEdata memory seem to verify just fine. It looks like it failed at "User ID memory" - whatever that is.

    This was programmed 15 years ago; no idea what's on that memory location.

    Robert
    My Creality Ender 3 S1 Plus is a giant paperweight that can't even be used as a boat anchor, cause I'd be fined for polluting our waterways with electronic devices.

    Not as dumb as yesterday, but stupider than tomorrow!

  2. #2
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    Default Re: 18F4550 programming failed using PICkit4 while verifying "User ID memory"

    Out of curiosity, did you try the PIC to see if it actually programmed? Usually the "User ID Failed" shows up before it even tries to program. Just asking.

  3. #3
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    Default Re: 18F4550 programming failed using PICkit4 while verifying "User ID memory"

    Quote Originally Posted by mpgmike View Post
    Out of curiosity, did you try the PIC to see if it actually programmed? Usually the "User ID Failed" shows up before it even tries to program. Just asking.
    It says "programming/verify" complete though?

    Gotta go feed the dogs. Gonna try with just a blinky program (this is an old program that worked way back when).

    Robert
    My Creality Ender 3 S1 Plus is a giant paperweight that can't even be used as a boat anchor, cause I'd be fined for polluting our waterways with electronic devices.

    Not as dumb as yesterday, but stupider than tomorrow!

  4. #4
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    Default Re: 18F4550 programming failed using PICkit4 while verifying "User ID memory"

    I don't think it's complaining about the UserID area, it's just a poorly arranged display making it look that way.
    The UserID is located at 0x200000-0x200007 in that part.

    It looks to me that it's complaining about location 0xcc0, which is in program memory.
    Try doing an erase and then a blank check.

    There's a later toolpack for the 18F devices... maybe try updating it?

  5. #5
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    Default Re: 18F4550 programming failed using PICkit4 while verifying "User ID memory"

    Got a new pack, same problem.

    Name:  18F4550 new pack failed.jpg
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    It already says ERASIN SUCCESSFUL midway down the pic.

    Not sure what to try next. I don't get why I can program a 16F877 without problems.

    Gonna gut my program and try to BLINKY, see if that makes a difference.

    Robert

  6. #6
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    Default Re: 18F4550 programming failed using PICkit4 while verifying "User ID memory"

    Gutted all the USB and interrupt stuff, added just a basic blinky, and it worked.

    Name:  18F4550 blinky worked.jpg
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  7. #7
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    Default Re: 18F4550 programming failed using PICkit4 while verifying "User ID memory"

    So I tried with a brand new 18F4550, same error:

    Name:  18F4550 verify failed new.jpg
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