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  1. #31
    Navigation software Moderator kunix's Avatar
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    Does updater.exe detect your device now? Don't try to flash anything, because it will cause rebooting to the bootloader which may be damaged now.
    However, there is a big chance that the bootloader is still in the RAM, so we could run boot.bin in the ldr.bin mode and flash 5.bin back.
    Last edited by kunix; 18th April 2012 at 10:35 AM.

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  3. #32
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    Weird,
    although I have erased region 5 successful and unsuccessful wrote back the region 5
    I have tried rrgn again the Region 5,
    still can get the region 5 bin files,
    once compare this Region 5 bin with initial back up, both are same.

  4. #33
    Navigation software Moderator kunix's Avatar
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    So you've just rebooted your device?

  5. #34
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    Hi kunix,
    This is my last Nuvi 255w with White screen to test, I am afraid if I reboot it, it will no longer Power ON again like the previous one.
    I have attempt to do the Region 5 and 43, because I read your other post and told that 'maybe the screen is white because the LCD is unknown to the bootloader?",
    that's why I tried to get the region 5 and 43 from working Nuvi 255W same HWID, attempt to overwrite the Region 5 and 43, and hopefully it can solve the white screen problem,
    would like to add that both Nuvi 255w can be access Mass storage mode and preboot mode and also boot as normal, just only the screen is total white, unable to see anything, since this 2 Nuvi with me already got some time, and I think no hope to recover, I am trying whatever method, no matter what and prepare to make it dead.

  6. #35
    Navigation software Moderator kunix's Avatar
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    Quote Originally Posted by albert_chong View Post
    Hi All,
    Thanks, I make a big mistake for wrongly use the command, my bad.

    Another one Nuvi 255w will be killed if I power off it.

    I attempt another Nuvi 255w with correct command
    first I tried only with command
    xrgn,5,1:/region_5.bin
    Result:
    Parsing "xrgn,5,1:/region_5.bin"
    Error

    2nd tried, erased region 5 and write back command
    ergn,5
    xrgn,5,1:/region_5.bin
    result:
    Update.log
    Parsing "ergn,5"
    Success
    Parsing "xrgn,5,1:/region_5.bin"
    Error
    Parsing "reboot"
    Success
    ------------------------------------------------------------
    Now this Unit still connect with Garmin Charger, still Power ON,
    if I off it, definitely it will not power on forever,
    any idea to recovery it ?
    To be honest, I don't understand what you were doing with this device after you've got this log.
    It looks like you've already rebooted it a few time. Right?

  7. #36
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    Oh well,
    the command come with "Reboot",
    Since the screen is white, I can't see whether it reboot, I just can hear the "Du Du' sound, suppose its Reboot.
    the first Nuvi, I have power off it by slide the power button to left, after that, it no longer power on.

    now I have tested the 2nd Nuvi and not to Power Off it.

  8. #37
    Navigation software Moderator kunix's Avatar
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    Okay, looks like understand now.... It's enough to avoid powering it off completely, because then RAM contents with the only alive copy of bootloader are lost.
    Btw did you try the same update.txt commands on both nuvis? Or did you delete "reboot" command for the second try?

  9. #38
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    Thanks Kunix,
    the first dead Nuvi what I told that I have use wrongly command rrgn intead of xrgn, so that, I have edited the update.txt rrgn to xrgn,
    but it's doesn't matter since xrgn region 5 & 43 will not successful.

    I have tested below command just now,
    ergn,5
    xrgn,5,1:/5.bin [I have rename it from region_5.bin to 5.bin]
    rrgn,5,1:/New_5.bin

    ergn success
    xrgn error
    rrgn success

    open the New_5.bin, All bytes fill with "FF"

    Now I test without "Reboot" command

    If without "reboot' command,
    after a while about 4 min, touch screen still No any responsive at all and no any "Du Du" also,
    screen still stay at White,
    remove the SD card and check the log file
    found after the ergn and xrgn command,
    after that it has unlimited line as below
    Parsing ""
    Error: Invalid line
    Parsing ""
    Error: Invalid line
    Parsing ""
    Error: Invalid line
    Parsing ""
    Error: Invalid line
    Parsing ""
    Error: Invalid line
    Parsing ""
    Error: Invalid line
    Parsing ""
    Error: Invalid line
    Parsing ""..................................
    Last edited by albert_chong; 18th April 2012 at 11:42 AM.

  10. #39
    Navigation software Moderator kunix's Avatar
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    So you've just run update.txt one more time? How did you do that?
    I mean did you just reinserted the SD card?
    Last edited by kunix; 18th April 2012 at 11:52 AM.

  11. #40
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    Yes, I just reinserted the SD card into Nuvi and
    I have put on the Garmin Charger on the Nuvi, to prevent out of battery.
    so that, I can keep on trying.

 

 

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