GPS Universal Firmware Patcher for Protected Garmin Devices v.1.30

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 Universal Firmware Patcher for Protected Garmin Devices

Universal Firmware Patcher for Protected Garmin Devices v.1.30

This is an universal firmware patcher for protected Garmin devices. Read this entire post BEFORE you start. You may not have to do every step. Do not deviate from this tutorial or you may permanently damage your device. It's safe to do this provided you follow the instructions exactly. Regardless, any risk is entirely yours.

Many devices recently have a strong firmware protection and cannot use unlocked maps because firmware requires .gma and has MSV ( Map Signature Verification).

In the fw list [see spoiler below] you will be able to check if your device firmware requires this patcher or if it just needs gimgunlock+mapsigpatch or simply an .unl file or old gimgunlock.

Important note by MOD: Please check in attached list, behind spoiler below, as to whether you need to flash patched .rgn in preboot mode or if you simply can flash patched .gcd in a normal way which is possible if the original firmware does not contain a GSV check yet (GSV: ---)  

Montana 680t users: read the note at the bottom of this post. 

Spoiler: 

Download and extract: IMGPatcher130_13-01-18.rar

Changelog:

• Improved support for the Edge 1030 firmware
• Updated HWID list: added new HWIDs as of January 13, 2018

Extract this and look for the newest version number of your device's firmware in the list: 13-01-18_fw_list.rar

Warning - Improper use of this software can damage your device: It's strongly recommended to backup your device files and NV before playing with firmware. How to backup Nuvi NV (region41) with sd

Procedure to use the patcher and to load the patched firmware in preboot mode ("GSV: Yes" devices) :

Prerequisite: You must have Garmin USB drivers installed on your computer to use Updater.exe [linked below].

1) Remove any gupdate.gcd from your device. If you don't it'll likely flash the device back to original (unpatched) firmware. It's not always there but if it's present it'll be in hidden .System folder of these protected devices. .System folder can only be seen in Mass Storage Mode, not in Media Transfer Protocol (See 2, the link there also shows how to see .System folder). 

2) Set it to Mass Storage Mode if necessary. How to set nuvi 2012 models (MTP devices) to behave like USB disks (MASS STORAGE)

3) Download compressed folder containing the latest version of patcher etc. from behind the above spoiler. Check your device's HWID is supported in hwids.txt before proceeding.

4) Copy the patcher in a directory along with your firmware's gupdate.gcd How to get a Garmin device firmware update without Webupdater? 
Note: be sure to get your device HWID's correct firmware, check it's HWID in GarminDevice.xml found in device's Garmin folder Read here: Garmin Devices, their related HWID numbers and Software update Pages links Table, or here: How to find your Garmin Device's HWID.

5) Drop the gupdate.gcd into the patcher's window. The patcher will provide the patched gcd file as '<original_name>_patched.gcd' in your chosen directory.


6) Download RGN_Tool: RGN_Tool_V094.zip

7) Drop your patched GCD file into RGN_Tool's drop zone and save it as an .rgn file. Important: Save it only in this format 'xxxx01000yyy.rgn' where 'xxxx' is your used firmware's 4 numeral HWID and 'yyy' is the software version. See this post for naming reason safety and procedure.



8) Download Updater.exe: Updater.exe_V2.8.0.0.zip

Copy Updater.exe into a directory along with your .rgn file, drag the .rgn onto Updater.exe, Updater.exe will open, select radio button for 'USB Device'



Remember to remove any previous gupdate.gcd in your device before flashing any updates.

Now, with it fully OFF (not in standby), plug the device into your PC and device will start and immediately, as Garmin logo appears press upper left corner to get preboot mode which enables Updater.exe to see your device (you may also hold the upper L cnr then plug in PC), quickly when Updater shows the device details in the window next to 'USB Device', click 'OK' or hit Enter on keyboard (still holding upper left corner until the flashing process is finished and Updater will show "Success" message). Safely unplug device from PC. Some devices reach preboot differently - All devices Preboot Modes : Garmin devices preboot mode

9) Clear Non Vol.(note: if you don't want to get weird problems, do it!) Nuvi: Clear Nonvol or reset your device How to reset a Garmin device
You are done, your device is unprotected, now you can use every kind of unlocked maps (NTU too).

 Originally Posted by Neil 

None of the units listed as "GSV: ---" need initial loading with RGN file via Updater.exe. Do steps 1 - 5 - Remember to remove any previous gupdate.gcd in your device, before flashing any updates, then load the patched GCD with WebUpdater.exe (Webupdater must be on desktop) or place it manually on the unit named gupdate.gcd.

NOTE: To flash a firmware update in the future, just patch the new gupdate.gcd, flash new fw normally with WebUpdater (drag&drop the file in WebUpdater shortcut on desktop), or copy it renamed gupdate.gcd in the sd:\Garmin (but remember to first remove any previous gupdate.gcd from your device), or copy gupdate.gcd in Device's .System. . You can even flash initially via patched GCD file provided your unit has no GSV in firmware. 

Warning - Improper use of this software can damage your device: It's strongly recommended to backup both your device's file system and it's Non-Volatile memory region before playing with firmware. How to backup Nuvi NV (region41) with sd
 Warning for Montana 680 users:
after loading patched firmware, reset the unit and disable Geocache Dashboard in map settings before using unlocked map or the unit locks up when it is selected.

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