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  1. #1
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    NUVI Nuvis start in Mass Storage Mode. Need earlier firmware?

    Hi, has someone the 4.40 fw version for nüvi 1450 and can put it up here?

    My nüvi gets into USB mode when I connect it to a charger, then after 10 seconds it starts normally, but if I reconnect the charger, it gets again to usb mode, which hasn't happened before the sw update. I hope that a downgrade to the latest firmware will solve this problem but I'm also listening to any other working solutions.

    Thanks,
    Alert

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  3. #2
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    @Alert
    Welcome to GPS Power.

    V4.40 is a very early version and i'd be cautious about downgrading so far. Anyway that sounds more like a problem with the charger or the usb connection than with the unit's software. Nearly all generic chargers will cause that behaviour and so can a genuine one if a wire or usb pin/pad is faulty.

    Try another genuine Garmin charger. If you don't know someone with one, i'd suggest take the 1450 to a retailer and ask them if you can with try one of theirs. Most retailers would be pleased to help.
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  4. #3
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    @Alert

    What version of SW is installed for now?
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  5. #4
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    @Giomen
    software was upgraded to the latest, 6.30, I downgraded yesterday to 5.40 but the problem is the same.

    @Neil
    If I'm not wrong, 4.40 was the latest before the upgrade to 6.30.

    Same thing happened to me with a nüvi 200 as well, after the upgrade to the latest firmware (I don't know here the number, because I gave it back to the owner), the GPS turns into USB mode when attaching the cable.

    Both of these devices functioned well with generic cables before the updates. I have no original Garmin charger/cable to test with them but as I have read on many places that won't solve the problem.

    It is also possible that when I have attached the cables to the devices I have damaged somehow the usb entry ports on the GPSs but I think this is unlikely with 2 devices at the same time ....

    I will describe what I have tried with the nüvi 1450 so far:
    • Ejected, removed safely from usb connection from Windows 10, Windows 7.
    • Reset all settings to default from the Garmin start screen.
    • Turned off Security - Safety.
    • Tried two generic cables with car charger and 3 wall charger heads. None of them left the GPS in GPS mode, only after 10 seconds exiting from USB mode.
    • Reset settings from the menu.
    • Downgraded to 5.40 firmware.
    • Tried all of them without the SD card put in.
    • Cleared Non-Vol Memory.



    None of them helped.

    What has helped a bit was entering to Diagnostic menu without the cable attached to the GPS, attaching the cable and pressing the power button, or the Exit button, I'm not sure, but now when I connect the cable, no matter if it's connected from the start or after that, the GPS enters to USB mode but after 10 seconds starts normally and I can use the GPS in normal mode but as soon as I detach and reconnect the cable, the same thing happens, the GPS enters to USB mode.

    I would be very grateful if you could post the 4.40 firmware ASAP just to try with it as well. If downgrading to that version won't help that means that something is wrong with the cables (which were functioning correctly before), or I accidentally damaged the USB port on the GPSs.

    Thank you for your help.

    Alert

  6. #5
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    Quote Originally Posted by Alert View Post
    @Giomen
    software was upgraded to the latest, 6.30, I downgraded yesterday to 5.40 but the problem is the same.

    @Neil
    If I'm not wrong, 4.40 was the latest before the upgrade to 6.30.
    Do you mean that you think V4.40 was the latest [that could use a generic charger] without being thrown into Mass Storage mode? Doubt that. Look at the official change-log for the version history:
    Code:
    Please Login or Register to see the links
    That's for HWID 0972 but it's the same for MTK HWID 1104. There were more than a dozen versions and over 6 years between 4.40 and 6.30. I don't believe you don't have a firmware problem, seriously. Read the links below for the hardware differences between most generic charger cables and original Garmin ones.

    Same thing happened to me with a nüvi 200 as well, after the upgrade to the latest firmware (I don't know here the number, because I gave it back to the owner), the GPS turns into USB mode when attaching the cable.

    Both of these devices functioned well with generic cables before the updates. I have no original Garmin charger/cable to test with them but as I have read on many places that won't solve the problem.
    That's the common denominator here? Generic cables maybe?

    It is also possible that when I have attached the cables to the devices I have damaged somehow the usb entry ports on the GPSs but I think this is unlikely with 2 devices at the same time ....
    Yup. See above, usb damage is less likely than a charger incompatibility problem.

    I will describe what I have tried with the nüvi 1450 so far:
    • Ejected, removed safely from usb connection from Windows 10, Windows 7.
    • Reset all settings to default from the Garmin start screen.
    • Turned off Security - Safety.
    • Tried two generic cables with car charger and 3 wall charger heads. None of them left the GPS in GPS mode, only after 10 seconds exiting from USB mode.
    • Reset settings from the menu.
    • Downgraded to 5.40 firmware.
    • Tried all of them without the SD card put in.
    • Cleared Non-Vol Memory.



    None of them helped.

    What has helped a bit was entering to Diagnostic menu without the cable attached to the GPS, attaching the cable and pressing the power button, or the Exit button, I'm not sure, but now when I connect the cable, no matter if it's connected from the start or after that, the GPS enters to USB mode but after 10 seconds starts normally and I can use the GPS in normal mode but as soon as I detach and reconnect the cable, the same thing happens, the GPS enters to USB mode.
    As said, typical behaviour using a generic charger.

    I would be very grateful if you could post the 4.40 firmware ASAP just to try with it as well.
    Sorry, i don't have it.

    If downgrading to that version won't help that means that something is wrong with the cables (which were functioning correctly before), or I accidentally damaged the USB port on the GPSs.
    The definitive test would be to use an original Garmin charger imo.

    Finally, please read fully these two threads: [Only registered and activated users can see links. ] and [Only registered and activated users can see links. ].
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  7. #6
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    The Nuvi 1300 always goes into data mode when using a Generic Charger with USB Cable
    After some time it will reboot and go into normal navigation mode.
    This is how it works in ALL firmware versions.
    The Nuvi's are not damaged they are working as expected.
    With Garmin Charger the Nuvi will go directly into Navigation Mode (there is a programming resistor inside the original charger which is missing on the generic charger).
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  8. #7
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    I understand your points, but the two devices (nüvi 1450 non-MTK and nüvi 250 more exactly) were working well with generic cables, BEFORE the update....

  9. #8
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    Are they the SAME generic charger cables that you've used always? Because some other cables might be 'correctly' wired for Garmin devices. A 'standard' USB cable [both data and power] contains 4 wires connected to the USB A plug/header [2 are for data: pin 2 is D- & pin 3 is D+]; 2 are for power: pin 1 is +5VDC & 4 is GND], but the microUSB or miniUSB plug/receptacle has 5 pins and the 5th pin is GND and may be used as a signal ground with pin 4. Depending on how the 4th and 5th plug pins are then configured will determine how the connected device reacts. I believe for Garmin nuvi devices to have different reactions the cable configurations at device plug end need to be like this:
    • pin 4 not connected - data cable, nuvi connects to PC as removable drive, navigation mode is not possible.
    • pin 4 & 5 directly connected - USB supplies 500mA, device goes to navigation mode if no data activity detected.*
    • pin 4 & 5 connected through 18kOhm resistor - Garmin power supply is possible up to 1Amp, both navigation mode and charging together for all nuvi models.
    • pin 4 & 5 connected through 22kOhm resistor - Garmin power supply is possible up to 500mA, active navigation mode and possible charging depending on device model [later nuvis need more power for both, up to 1Amp, so cannot charge while navigating].

    *Note: A simple USB charger may have a 200 Ohm resistor between D+ and D- or they may even be directly connected. The device then shouldn't continue beyond a set time-out to attempt transmitting or receiving data due to lack of signal on the data pins 2 & 3, but can of course draw power which is the sole intention.

    As dasilvarsa's quite correctly points out, the device firmware version has nothing to do with this.
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  10. #9
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    Quote Originally Posted by Neil View Post
    Do you mean that you think V4.40 was the latest [that could use a generic charger] without being thrown into Mass Storage mode? Doubt that. Look at the official change-log for the version history:
    Code:
    Please Login or Register to see the links
    Maybe visa versa:

    Changes made from version 4.40 to 4.50:
    IMPORTANT: If your device is running software versions 4.30 or 4.40 your favorites will be erased with this update. Please click here to learn how to back up your favorites.
    Fixed a problem in software versions 4.30 and 4.40 with Favorites after a software upgrade.
    Corrected a problem related to starting up the unit in mass storage mode.
    Improved software updating process from update cards and GCD files.
    Added location of Language Guide files.

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  11. #10
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    Exactly G, V4.5 corrected an issue in V4.4 where connection to genuine Garmin chargers caused the nuvi to start in MSM. That's the opposite of V4.4 allowing use of chargers without device starting in MSM, which i why i gave Alert the link to the change log. V4.4 was buggy but V4.30 must have been even worse as Garmin withdrew it.
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