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  1. #161
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    Quote Originally Posted by tuffy View Post
    The MB is S3 luckily, I bought the unit (255w) in the US this summer and have downloaded and installed TSM9.0. The firmware is 5.10 GPS Sw 3.10b

    Is there a benefit to flashing this unit if I am using TSM9.0?
    I will have to see about installing CNSEA4.5. Which one is better by the way?

    Thanks for the help by the way!
    Then you'll be able to flash the unit without any problem. The US OS does not support
    TSM9.0's JCV and if I'm not wrong, highway mode and lane assist.

    By flashing to SG/MY firmware, you'll be able to enable the unit's JCV, highway mode
    and lane assist. But you'll lose US firmware's ecoroute feature. You'll just have to
    choose which one you like.

    I'll give you the flashing instructions in my next post.

    I personally use both TSM9.0 and CNSEA4.5. TSM9.0 has more poi and is more detailed
    while CNSEA4.5 provides better routing. I installed both in my unit. I search using
    TSM9.0 and then route using CNSEA4.5. Note that you'll have to enable only one map
    at a time otherwise the unit will be confused when routing.

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  3. #162
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    tuffy, here is the walkthrough. Please read the whole thing first before attempting to flash
    your unit. If you do it as shown, I'm sure everything will be fine.

    IMPORTANT:

    - This is for 2x5w units only
    - This guide is for mainboard version S2 & S3 only.
    This does not work with mainboard version S4, you'll end up with a white screen
    and brick your unit! (To check your board version, press the battery icon at the upper
    right of the unit for about 8 seconds, you'll be in the diagnostic mode. The board
    version is next to the unit model at the top of the screen)
    - make sure battery is at least 75% charged
    - Backup all your files before flashing
    - Please use a quality USB cable
    - Do it at your own risk


    It is also a good idea to hard reset your unit before and after flashing. You can do this
    by turning the unit off, press and hold the lower-right corner of your screen and turn on
    the unit. Hold and wait until a popup message appear asking whether you want to
    delete user data. Answer Yes and the unit will reboot. NOTE: Your saved POI will be
    deleted. If you want to keep your POIs, backup the Garmin/GPX folder.


    STEP 1: Preparation

    1. Remove your Memory Card (if any) from your Garmin Unit.

    2. If you have security lock enabled, disable it.

    3. Connect your Garmin Unit to the computer using the USB Cable.

    4. Delete GUPDATE.GCD from the Garmin folder (if it is there)

    5. Delete the VOICE and the TEXT folder inside the Garmin Folder.
    (If you do not delete the files, problems will occur after the firmware update rendering your device useless).
    REMEMBER NOT TO COPY BACK THE BACKED UP VOICE / TEXT.

    NOTE: This is because the voice files that comes with the US/EU units are not
    compatible with Asian firmwares. The same is true with voice files that come with
    Asian units - they're not compatible with US/EU firmwares.

    6. After deleting the voice and text folders, disconnect the Garmin Unit from the computer.

    7. If you've not done so, Hard reset the unit.

    8. Then Switch OFF the Garmin Unit.

    ----------------------------------------------------------------------------------------------------------

    STEP 2: Converting 205w to 2W Series (For 205w only, Other models please go to the next step)

    WARNING: This is a one-way process. You will not be able to revert back to 205w. The only
    disadvantage known at the current moment is that you'll lose the ecoroute feature if you
    later flash to US/EU firmware.

    1. Download the following file.
    [Only registered and activated users can see links. ]

    2. Unrar the file.

    3. Drag the file 082701000500en.rgn and drop to Updater.exe

    4. Under Connection Setting, Select USB Device.

    5. Slide and HOLD the Power Button of the Nuvi, then quickly plug in the USB cable to connect to the computer. (Continue to hold the power button).

    6. The updater.exe will detect the USB Device with your model software and Unit ID. (Continue to hold the power button)

    7. Click "Ok" on the updater to process the flashing.

    8. Release the Power Button AFTER you see "LOADER" appear on the Garmin Unit.

    9. Let it flash the firmware (Do Not Disconnect your Garmin unit from your computer) till it is completed.

    10. Once the update completes, let the Garmin unit boots until the nuvi drive appears on the PC. Then disconnect the cable from the PC.

    11. Verify that you have a US firmware installed by going to the "About" screen. The version should be v5.00

    12. Repeat No.3 to 10 using the file 082701000280.rgn

    13. Verify that your unit has been changed to 2W Series by going to the "About" screen.

    ----------------------------------------------------------------------------------------------------------

    STEP 3: Enabling TTS (Text-to-speech) on the 205w or 255w EU (Other models go to the next step)

    WARNING: This hack comes with a minor flaw. The boot up logo of your unit will change to a Chinese logo.
    Actually there is a clean patch to solve this problem but I am not allowed to distribute it.

    1. Download the following file.
    [Only registered and activated users can see links. ]

    2. Unrar the file.

    3. Drag the file CHN_v270.rgn and drop to Updater.exe

    4. Under Connection Setting, Select USB Device.

    5. Slide and HOLD the Power Button of the Nuvi, then quickly plug in the USB cable to connect to the computer. (Continue to hold the power button).

    6. The updater.exe will detect the USB Device with your model software and Unit ID. (Continue to hold the power button)

    7. Click "Ok" on the updater to process the flashing.

    8. Release the Power Button AFTER you see "LOADER" appear on the Garmin Unit.

    9. Let it flash the firmware (Do Not Disconnect your Garmin unit from your computer) till it is completed.

    10. Once the update completes, let the Garmin unit boots until the nuvi drive appears on the PC. Then disconnect the cable from the PC.

    11. Verify that you have a CHN firmware installed by going to the "About" screen. The version should be v2.70

    12. Copy GUPDATE.GCD from the nuvi205W_CHN_v290 folder to the garmin folder of your unit

    13. Disconnect the USB cable and let the unit restart. It will update itself to CHN v2.90.

    14. Verify that you have CHN v2.90 installed.

    15. Delete the GUPDATE.GCD from the garmin folder of your unit.

    16. You have enabled TTS on your unit.

    NOTE: For 205w, if you later flash your unit to US/EU firmware, you'll not be able to use TTS.
    This hack is discovered by worawut610 of Thailand's smart-mobile.com

    ----------------------------------------------------------------------------------------------------------

    STEP 4: Flash the Garmin Unit to SG/MY Firmware

    1. Download the two rar files.
    [Only registered and activated users can see links. ]
    [Only registered and activated users can see links. ]

    2. Unrar the firmware file.

    3. Drag the file 093001000230.rgn and drop to Updater.exe

    4. Under Connection Setting, Select USB Device.

    5. Slide and HOLD the Power Button of the Nuvi, then quickly plug in the USB cable to connect to the computer. (Continue to hold the power button).

    6. The updater.exe will detect the USB Device with your model software and Unit ID. (Continue to hold the power button)

    7. Click "Ok" on the updater to process the flashing.

    8. Release the Power Button AFTER you see "LOADER" appear on the Garmin Unit.

    9. Let it flash the firmware (Do Not Disconnect your Garmin unit from your computer) till it is completed.

    10. Once the update completes, let the Garmin unit boots until the nuvi drive appears on the PC. Then disconnect the cable from the PC.

    11. Let the unit starts, and when it asks for the country, choose SINGAPORE or MALAYSIA.

    NOTE: This is important because each country you choose gives you different feature set. For Thailand, choose Singapore or Malaysia
    for the best features.

    12. Verify that you have a SG/MY firmware installed by going to the "About" screen. The version should be v2.30.

    13. Copy GUPDATE.GCD from the nuvi2x5w_SG_v2.60 folder to the garmin folder of your unit.

    14. Disconnect the USB cable and let the unit restart. It will update itself to SG/MY v2.60.

    15. Verify that you have SG/MY v2.60 installed.

    16. Copy GUPDATE.GCD from the nuvi2x5w_SG_v2.70 folder to the garmin folder of your unit (overwriting the existing one)

    17. Disconnect the USB cable and let the unit restart. It will update itself to SG/MY v2.70.

    18. Verify that you have SG/MY v2.70 installed.

    19. Delete the GUPDATE.GCD from the garmin folder of your unit.

    20. Copy the TEXT and VOICE files from the downloaded rar file to the garmin folder of your unit.

    21. Hard reset your unit again.

    22. Go to Diagnostic mode (pressing and hold the battery icon) to check that the ROM passes the test.

    23. You've successfully flash your unit to SG/MY firmware.

    IMPORTANT: You've to go from v2.30 --> 2.60 --> 2.70. Don't go directly from 2.30 to 2.70 or
    you'll have problems with your unit.

    Note: A small part of these instructions comes from nuvi255w's blog.

    ----------------------------------------------------------------------------------------------------------

    Let me know how it goes. Good Luck!
    Last edited by Earthkeeper; 5th October 2009 at 10:06.

  4. #163
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    Earthkeeper,
    This is an excellent walk through, i will give it a go tomorrow.
    I have been looking for CNSEA4.5 but so far have been unable to find a download. Would you happen to have a link for that?
    Thanks again for taking the time to write up the last post.

  5. #164
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    tuffy, it seems all the download links for CNSEA4.5 are not available any more. I'll give you a PM if I manage to get one.

  6. #165
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    Thanks again Earthkeeper, I am looking forward to upgrading this puppy!

  7. #166
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    thanks too for the detailed instructions..

  8. #167
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    Quote Originally Posted by rougegps View Post
    thanks too for the detailed instructions..
    rougegps, is your unit a 205w or 255w?

  9. #168
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    Quote Originally Posted by Earthkeeper View Post
    If you look back on this thread, you'll see a download link for the Thai JCV file.

    Also, even if you have the JCV file, it will only work on the unit that supports JCV,
    such as the nuvi 215w in Thailand (which is ridiculously expensive). If you have nuvi 2x5w, the only choice is to flash the Sg/My OS (which supports encrypted JCV).

    Where in Thailand are you in? If it's not too far, I can probably help you to flash it.
    You'll get: JCV, highway mode, lane assist, TTS (even on the 205w).
    Thank you Earthkeeper . I live in Bkk. but I ask some one to flash to Sg/My OS for get JCV.
    You mean 205W,215W and 255W maybe the same. Can flash 205W have function same as 255W?

  10. #169
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    Quote Originally Posted by kit05 View Post
    Thank you Earthkeeper . I live in Bkk. but I ask some one to flash to Sg/My OS for get JCV.
    You mean 205W,215W and 255W maybe the same. Can flash 205W have function same as 255W?
    Yes, you're correct. You can convert a 205w to 255w. The only difference is the model
    number. All the features are exactly the same. As for 215w, it has an added bluetooth function.

    I live in Samutprakan (Srinakarin Road). If you're near, we can meet and I'll help you
    flash your unit. But first please check the version of your motherboard. Press the
    battery icon at the upper right of the unit for about 8 seconds, you'll be in the
    diagnostic mode. The board version is next to the unit model at the top of the screen.

    Let me know what version is yours - S2, S3 or S4?
    Last edited by Earthkeeper; 26th September 2009 at 21:19.

  11. #170
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    Quote Originally Posted by Earthkeeper View Post
    rougegps, is your unit a 205w or 255w?
    my unit is a 255w S3 board. I successfully flashed it to 2.7 last night. thanks for the flash package, nice and clean techniques.

 

 
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