Quote Originally Posted by Kanopus View Post
There is a difference in GPS chipset between 37xx and 34xx. You can expect, that different hardware will lead to different results, which can't be corrected by firmware.

I don't understand this obsession on accuracy value. This is some kind of synthetic number, for which we even don't know if values from different firmware are directly comparable. I think there is accuracy value in signal logs. As it happened, the best recorded accuracy was for firmware 37xx v3.60, which measured the worst signal quality.
I absolutely do not share the idea that our quest for accuracy is an obsession, but a legitimate challenge for our intelligences, for anyone who wants to understand, learn and maybe solve the problem. From our "obsession" for accuracy, intriguing new questions were raised that open new doors of knowledge to anyone who is interested.

The hardware and firmware and their controllers are different, designed for each device type, and the results may, and appear to be, different, but that does not mean that we can not fix this. The fact is, if we believe that we can not, we will never succeed. Fortunately there are those who believe and so many changes in firmwares were possible increasing the number of functions and benefits of the many Garmin gps..

I believe we should do comparative tests, side by side, with tracklogs to check the accuracy "real" between them, as suggested by the X-trail. Other possibilities would be to record specific 3790 original firmware regions on the 3490 fw. I know this is possible with some regions, but Loly is the expert on the subject.. (139 rgn?)