Thread: Thailand Streetmap Eng NT+THAI V11.00+JCV+ DEM+ Thailand 3D Building

Originally Posted by Milton

Is it possible to convert Nuvi 1460 Sg/My version 2.10 to Nuvi 1460 TH version 3.0 with the same instructions as below? This version 2.10 can view Thai JCV, but there are many bugs, so I want to upgrade to newer version (convert to Thai firmware) and can still use Thai JCV. Moreover, if this is possible, would it be fine to use Thai V11 Duo map?

You can try it !
But remember to always use your original boot.bin

Thanks Khun Aekhong. May I understand correct that if I use original boot.bin this will help to prevent my Nuvi turn into a brick? In my case, what should I do for instruction no. 4 ("4. Downgrade your FW Nuvi 1490 US to 3.00 US by 1490 300US.rgn with Updater. or nuvi13xxand14xxseries_regionfileonly__300.gcd.")?

Originally Posted by aekhong

You can try it !
But remember to always use your original boot.bin

Originally Posted by Milton

Thanks Khun Aekhong. May I understand correct that if I use original boot.bin this will help to prevent my Nuvi turn into a brick? In my case, what should I do for instruction no. 4 ("4. Downgrade your FW Nuvi 1490 US to 3.00 US by 1490 300US.rgn with Updater. or nuvi13xxand14xxseries_regionfileonly__300.gcd.")?

If you need to go back to US3.00 firmware., you can...

-Use RGN_Tool to open "original US 14xx swv3.00"
-save to a .rgn file (without modified)
-Use updater.exe to flash nuvi

That's it. !!

And yes., Your nuvi will be fine with your original boot.bin
It may keep rebooting if .rgn file is wrong but it's easy to recover just use your original gupdate.gcd file using RGN_Tool to save to a .rgn to recover your unit.

Sorry for my unclear question. I mean do I need to downgrade my 1460 SG/MY FW 2.10 to 2.00 or I just ignore this instruction no. 4 and go to no. 5 right away by converting my Nuvi 1460 SG/MY to Nuvi 1460 TH by 1460 2.10 SG/MY TO 1460 3.00 TH.rgn with Updater?

Originally Posted by Milton

Sorry for my unclear question. I mean do I need to downgrade my 1460 SG/MY FW 2.10 to 2.00 or I just ignore this instruction no. 4 and go to no. 5 right away by converting my Nuvi 1460 SG/MY to Nuvi 1460 TH by 1460 2.10 SG/MY TO 1460 3.00 TH.rgn with Updater?

Do you still use swv Sg/My2.10 ?
Because now is 2.80 available for 1460Sg/My

Code:

Please Login or Register to see the links

Many bugs in 2.10., ....unstable
See PM.

Thanks and will update to 2.80 as per your advice.