Likes: 
To be executed, a text command must be enabled [i.e. present] in the unit software [firmware]. If the command "if_error" or any other one isn't present then it cannot be executed by ldr.bin and an 'invalid command' error will be shown in update.log. 'if_error' is present in US/EU firmwares of 3xxx, but there are some commands not in roughly-corresponding Asian [i think maybe SG 3760? has rrgn missing which is a far bigger concern than 'if_error'].
Older US/EU units up to and including nuvi 1xxx series also don't have 'if_error' present in their firmware. See Posts 71 to 75 here: [Only registered and activated users can see links. ].
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16th January 2015, 10:13 PM #1Garmin/GPS Systems GMod.
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'Thanking Posts' are banned. To thank someone, and/or to see hidden links and content, use the [Only registered and activated users can see links. ] button below left of the helpful post then refresh your browser [F5 key]. 'Thanking Posts' are banned.
Please don't spam. Posts serving no purpose other than to thank or to ask about hidden links are trashed or deleted, it's GPSPower's policy. Please don't spam.
[Only registered and activated users can see links. ] should make their first post as a new Intro Thread in [Only registered and activated users can see links. ].
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5th May 2015, 08:46 AM #2Junior Member
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12th June 2015, 02:40 PM #3Pro-Member
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I'm assuming the 3790US is one of the "new devices" that needs the "2" value in the script, right? In that case, what does this exactly mean: [Only registered and activated users can see links. ] ? Does that mean I need to backup twice with the script value set to "1" and the other at "2"?
What does this text: But this would be located on RWFS drive but not SD. I think you can find it there (in RWFS). exactly mean also?
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12th June 2015, 02:57 PM #4Important User
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No, read with care:
Originally Posted by kevindd992002
3790 is older(2010)For newer devices like 3597, 2797 etc (2013 & later)
read here [Only registered and activated users can see links. ] post n7What does this text: But this would be located on RWFS drive but not SD. I think you can find it there (in RWFS). exactly mean also?
It applies to 35XX series (2013 & later)
You have to navigate to get to the good.
Galaxy S5 Kitkat 4.4.2 / Nuvi1200->1250 / Nuvi3790T->34xx / Nuvi 2200 / Nuvi 66 / Oregon 600
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12th June 2015, 03:37 PM #5Pro-Member
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Great, thanks! Sorry, I lost track when the 3790US was bought. I thought it was a 2013 model for some reason. Originally Posted by catymag
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23rd July 2015, 01:47 PM #6Master
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NV (region41) backup with sd, does works for Montana too?
------------------------------------------------------------------
Montana650 - Nuvi1490T - iPhone5S (iOS9.2)
StreetPilot at Galaxy S4 Mini - cracked Nuvi 760
----------------------always unpaved----------------------
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23rd July 2015, 08:12 PM #7Garmin/GPS Systems GMod.
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@panosham
Montana firmware has 'rrgn/xrgn/ergn' in it so it should work. Takes only a minute or so to make a pack for microSD and try it. It won't cause any harm provided that you ensure use of the correct ldr.bin for Montana [HWID1275].'Thanking Posts' are banned. To thank someone, and/or to see hidden links and content, use the [Only registered and activated users can see links. ] button below left of the helpful post then refresh your browser [F5 key]. 'Thanking Posts' are banned.
Please don't spam. Posts serving no purpose other than to thank or to ask about hidden links are trashed or deleted, it's GPSPower's policy. Please don't spam.
[Only registered and activated users can see links. ] should make their first post as a new Intro Thread in [Only registered and activated users can see links. ].
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22nd August 2015, 01:47 PM #8Master
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I did it and worked fine at Montana! Thank you!
------------------------------------------------------------------
Montana650 - Nuvi1490T - iPhone5S (iOS9.2)
StreetPilot at Galaxy S4 Mini - cracked Nuvi 760
----------------------always unpaved----------------------
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6th October 2015, 11:34 PM #9Member +
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I managed to backup my nuvi and got these files: last_id.bin, Ldr.bin, update.log and update.txt
with the update.txt content:
rrgn,41,1:/41.bin
reboot
and update.log:
nüvi 2xx5 Software Version 8.20, UID: 38655XXXXX, HWID: 38655XXXXX
------------------------------------------------------------------------------
Parsing "rrgn,41,1:/41.bin"
Success
Parsing "reboot"
My model of nuvi is the European 2445LM.
After trying to enable some featuers in my nuvi, I found out that my bluetooth was not able to be activated and further more, my gtm 25 is no longer being able to detected. I decided to restore my nuvi to its previous state by changing the update.txt to:
xrgn,41,1:/41.bin
reboot
and place it along with the 41.bin file created in the backup stage.
the location is Garmin\Updater\1371\
However, after inserting the microSD into my nuvi 2445LM, it didn't boot into the software loading mode but loaded as usual and may I know what I have done wrong?
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7th October 2015, 01:22 AM #10Important User
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Try 154 instead of 41. Originally Posted by fracessco10
All looks ok, but check again files paths and if there are no typos in command (may be spaces) and in files names.
Do you have reg 139/140 backup? I don't remember if you have to restore them too, but read [Only registered and activated users can see links. ]
You have to navigate to get to the good.
Galaxy S5 Kitkat 4.4.2 / Nuvi1200->1250 / Nuvi3790T->34xx / Nuvi 2200 / Nuvi 66 / Oregon 600
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