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Thread: The Chinese GPS Firmware Thread

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    I've got a GPS 84H-3, the system is no working now, when I turn it on, only I can see a photo with a red car, no more, suppose is the welcome screen I'm no sure about the what is his firmware. Know something about that?



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    GPS 84H-3

    OS: Windows CE 6.0 Net Core
    CPU: MStar MSB2521
    Display: 5", 800x480

    That's all a quick Google-search resulted in - nothing more.

    You can feel lucky: Startscreen showing a red car and a white wind mill indicates it's a YF GPS ...

    So basically search this thread how to reset/repair a YF GPS - already multiple times described, AFAIK - in order this thread doesn't become a mantra ...

    First of all you should do: Try to start it by pressing reset button ... See user-manual how to do so.

    --------------------------------- DOES THIS WORK ? ----------------------------------------

    How to get into Windows CE mode:

    1. Create a text file called YFGo2CE.bld. The file's contents can be anything but must be at least 1 byte.
    2. Copy the YFGo2CE.bld file to the root directory of the SD card.
    3. Power off (not sleep) the GPS, then switch it back on.
    Last edited by jwoegerbauer; 06-06-13 at 12:21 AM.

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    Quote Originally Posted by jwoegerbauer View Post
    Don't get me wrong, but I believe it's your job to ask GRIMAX (yes they offer an online helpdesk) for a copy of your unit's default (factory side) registry.
    OK It's all right, the problem is that China does not exist with this name, nor know who made ​​it, is one of many generic have lying around the world and that some importers buy quantities and traded in their countries . Is identical and brings the same menu to another you see on YouTube MEDIATEK brand, which is the internal chip mark, but I can not find those that make this GPS marked "MEDIATEK", surely there must be another way to solve the problem, first restoring the registry for an equal, or reinstalling the original firmware (also meeting), or re-installing the WinCE 6.0 (not if you can and how to do it) and finally, I read for some forum, that these teams bring another partition of the internal flash memory hidden, where there is a backup of the entire system as often happens in the netbook or notebook etc.. but do not know how to access the hidden partition ... Just hope that someone with a GPS similar to mine can happen registration or expect some understanding on these devices can help ...
    Thanks and best regards ...

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    You can feel lucky: Startscreen showing a red car and a white wind mill indicates it's a YF GPS ...

    So basically search this thread how to reset/repair a YF GPS - already multiple times described, AFAIK - in order this thread doesn't become a mantra ...

    First of all you should do: Try to start it by pressing reset button ... See user-manual how to do so.

    --------------------------------- DOES THIS WORK ? ----------------------------------------

    How to get into Windows CE mode:

    1. Create a text file called YFGo2CE.bld. The file's contents can be anything but must be at least 1 byte.
    2. Copy the YFGo2CE.bld file to the root directory of the SD card.
    3. Power off (not sleep) the GPS, then switch it back on. ..........................................




    Hello again ... reading your post, look at the files in the micro SD of my GPS and see that I have also this "file" but completely blank, my GPS also means that it's a YF GPS ??? That is good news or not ???. - thanks.-
    Last edited by Arteche; 06-06-13 at 07:37 AM.

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    When you say copy to the root of the SD card where exactly is that?

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    In short: You don't go into any folders or anything.

    FYI:
    Last edited by jwoegerbauer; 06-06-13 at 04:31 PM. Reason: link added

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    Quote Originally Posted by Arteche View Post
    I have also this "file" but completely blank
    The YFGo2CE.bld way (can't count how often this already mentioned in current thread, why you guys aren't reading ?) - simply try it out, you can't hurt anything. Either it works or not.

    There should be no other files in the root of SD-card!


    RECAP:

    In the root of your SD card, create a file named YFGo2CE.bld containing any string/text inside it. Go for "\windows\explorer.exe" (without quotes) if you're feeling uninspired. You can do that by creating a text file first, editing it with notepad, saving it, then renaming the .txt filename into a .bld filename.

    BTW:
    => YF Technology (formerly Yuan Feng), located in China
    MediaTek (MTK) is located in Taiwan
    Last edited by jwoegerbauer; 06-06-13 at 07:20 PM.

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    OK, excuse me, remember that I do not speak English, and I spend all by GOOGLE translator, and everything is not always as clear ... And I ask you to explain to your partner the other post, I opened a new one, thinking that could be read by more people than here ... and be more likely to get help. - Continando with the subject, and I understand what the file, and place it in a completely free Micro SD, put it in the GPS and on, rather than achieving that? Remember that I have no technical knowledge and appreciate your cooperation to help in any way you ... Thank you. -

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    Default need help

    my friend bring me a chines gps has no name only write gps and have only power button and rest button not working
    it just open to welcome screen and than give error chines words and main.exe and nothing else what to do and how to flash it it not read on active sync and what firmware should i give it?

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    Quote Originally Posted by ablbd View Post
    enito, is pretty close to your device.
    Hi thx for the help, upgrade succesfull but i get in reboot, applicaction main.exe encountered a serious error and must shut down

    EDIT: i booted now using this (copy to root sd) and now i get menu



    using part1, but..cant get use Bluetooth, whats the correct image for fix this?

    thx for any tip
    MT3351
    YG-912C-B1.1
    Last edited by enito; 10-06-13 at 03:25 PM.

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    Quote Originally Posted by nabilrahal View Post
    my friend bring me a chines gps has no name only write gps and have only power button and rest button not working
    it just open to welcome screen and than give error chines words and main.exe and nothing else what to do and how to flash it it not read on active sync and what firmware should i give it?
    Seems to be a MTK unit.

    1. Power off the device
    2. Put into root of SD-card a file like CeDesktop.exe (Google for it) and rename it to Update.exe
    3. Insert SD-card into GPS
    4. Power on the device


    If the Windows CE desktop is shown, then there are good chances to unbrick/repair the device

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    Quote Originally Posted by jwoegerbauer View Post
    Seems to be a MTK unit.

    1. Power off the device
    2. Put into root of SD-card a file like CeDesktop.exe (Google for it) and rename it to Update.exe
    3. Insert SD-card into GPS
    4. Power on the device


    If the Windows CE desktop is shown, then there are good chances to unbrick/repair the device
    thank you for replay i did what you said the error doesn't appear but it still on welcome screen
    by the way the device is
    eroda mtk mt3351c
    64mb
    4.3" 800x480
    should runing windows ce 6.0

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    Quote Originally Posted by nabilrahal View Post
    eroda mtk mt3351c
    MTK MT3351c is description of CPU

    You have to tell here data similar the example shown next

    Modell: YG-912M-FSJ-2GI-4LS-5LS
    OS: V.12M.A00001.100701.2G
    AP: V1.2.11.10.05.10


    Should be a sticker there where you pick the data requested off.

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    Quote Originally Posted by jwoegerbauer View Post
    MTK MT3351c is description of CPU

    You have to tell here data similar the example shown next

    Modell: YG-912M-FSJ-2GI-4LS-5LS
    OS: V.12M.A00001.100701.2G
    AP: V1.2.11.10.05.10


    Should be a sticker there where you pick the data requested off.
    okay that what i find
    no modell written
    V.912C.711101.111121.4G
    V1.2.21.11.12.09

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    Quote Originally Posted by nabilrahal View Post
    okay that what i find
    no modell written
    V.912C.711101.111121.4G
    V1.2.21.11.12.09
    Already forgotten? You named the model as YG-912C-B1.1

    Now, because all relevant data are present, you are ready to search the web (recommended 4PNA.com) for appropriate firmware ...

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    Default In memory of this thread's title: Some Firmwares For Units With YF Mainboard

    ROM version






    HTH

  • The Following User Says Thank You to jwoegerbauer For This Useful Post:

    Malthor (06-08-13)

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    Default 7" china GPS model YG-912C

    hi i have bricked my GPS its a 7" china GPS model YG-912C its got windows ec 6 on it i installed MoiPocket 4.0 on it but it was laggy so i uninstalled it all went well till i deleted the files from the GPS now when it boots up i get a gray screen and its in USB storage mode how do i fix it can anyone help ive downloaded the firmware for it but i dont know how to flash it

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    Quote Originally Posted by joshx88x View Post
    ive downloaded the firmware for it but i dont know how to flash it
    Try FlashTool (aka PNAFlashTool) v 1.5 - a Win32 utility developped by MediaTek Inc. Simply do a Google-search for it.

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    Hi , im still searching a working bluetooth firmware for YG-912C-B1.1. I downloaded various, but cant make work the bluetooth.
    I attach a photo with exact model, thx for any tip...and for your time


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    Default GPS stuck on the welcome screen!!! :-o

    I have 5 inch Chinese GPS from ebay. lastly the device doesn't start. when I reset it, the welcome screen is shown and freeze (the red sports car and the wind mill).
    I have spending the last 3 hours to find a solution on the forums and apparently there are many people with the same problem like I have but no even one good solution. I tried to download few YF firmware and copy them to micro sd card but it seems there is no respond. same problem.
    can any one help me and many others??
    Last edited by liron021; 18-06-13 at 10:56 PM.

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