Hello all,
Hope you are doing well.
For long years a fan of Tomtom, with "modded" One V3, recently i learned towards garmin.
I am a passionate of GPS and specially old devices, love seeing how it was before, update it and try to make it running actual maps.
In the collection I have
Nuvi 360T
Nuvi 660FM
Nuvi 760
Nuvi 860
Nuvi 865
Nuvi 550
Nuvi 3790
Drive Smart 66MT.D

almost all of them were ok running City Navigator Europe 2025.10 NT, sometimes slower but they run, expection of the 8XX series.
When I try to calculate a big route 700km, I got memory error. All devices are fully update, running a 1.5Gb map from internal memory.
I've been thinkering with chapgpt for days, but honestly we are turning errands here. On one day to say to put 2018 CN...same result...then to go 2016...then to go 2014...
So I profit to ask the ones that know for real, on these kinds of devices, which is the best option. On other forums I see people talking about using these devices with 2022 NA maps..
Also to confirm that there are 3 types of JCV files like it told me (super light around 80mb, light around 300mb, and normal more than 600mb) and if so where can I find the super light for 2025.10nt

Let me know, and thanks for helping me