Thread: About 37xx converted to 34xx satellites reception accuracy

Originally Posted by angelozip

Well, I am sorry once again contradict our competent collaborators friends. My conclusions (partial and subject to more tests, as always) were based on data collected in gps that I tested. As Neil has concentrated its tests in Kunix 's fw # 2, I decided to focus on #1. In despite of the statements of Neil and Kunix that the boot.ini of 3790 + 3490 fw_all is inefficient in accuracy, was not quite what I noticed in my tests. In fact the precision shown on the screen of this fw is similar to the 3490 full_fw, but the only Kunix_fw that proven unequivocally increased inaccuracy was the # 2 tested by Neil, as we see in the tracks that he published. In my case I compared the kunix # 1 fw (post 310) with a nuvi 3490 real and once again I was disappointed with the results, but this time not with the fw Kunix’s, but with the performance of my 3490, lol .. Turns out he had practically the same performance on 3790 mod with fw mentioned, same margin of error. ...........

Well, actually what I said was that from my brief side-by-side of Kunix's 37 boot + 34 fw_all tested [kunix #1] against my conventionally modded 37>34 is that they appeared to have the same accuracy, not 'the boot.ini of 3790 + 3490 fw_all is inefficient in accuracy'. From my [Only registered and activated users can see links. ]:

Sat accuracy seems the same as my other convert, varied 4 to 10 metres today in mostly overcast suburban running (no tall buildings) in half-hr test. This unit and my other 2 showed rock solid 3 m before as 3790s which i find to be unrealistic in any case [just artificially enhanced with hotfix?]. From full off, about 4 mins until 'ready to navigate'. From standby 60-70 m quickly backing off to 8/9 m between 30 sec to a minute. I'd suspect hotfix is not working on these converts because while navigating there seems to be no problem, at least with both my 37>34.
Sat accuracy seems the same as my other convert, varied 4 to 10 metres today in mostly overcast suburban running (no tall buildings) in half-hr test. This unit and my other 2 showed rock solid 3 m before as 3790s which i find to be unrealistic in any case [just artificially enhanced with hotfix?]. From full off, about 4 mins until 'ready to navigate'. From standby 60-70 m quickly backing off to 8/9 m between 30 sec to a minute. I'd suspect hotfix is not working on these converts because while navigating there seems to be no problem, at least with both my 37>34........

Keep in mind that my conventionally modded 37>34 [full 34 fw] and Caty's both have far better reported accuracy than yours and isg's. I still regard my conventionally modded 37>34 to have acceptable accuracy. I also absolutely conclude that yours doesn't. I also continue to ponder the effect of hotfix not working on any of the converts [if that is the case]. I wish i had a real 34 to compare, but the 3590 was the closest i could think of and it didn't appear to compare well to 3790 original. The other thing is that I have never properly tested my 2nd 37 as a conventional convert, only as both kunix's mods, so i don't know if it's accuracy as that will be 'good' or 'bad'. I do want to keep the virgin 37 totally original as a standard, so that only leaves me with 2 other units to compare as various mods.

The ultimate definitive test imo would be simultaneous track logs of (1) 3790, (2) 3490, (3) 37>34 conventional convert [with reported good accuracy like mine & Caty's], (4) 37>34 conventional convert [with reported bad accuracy like yours & isg's], (5) 37>34 Kunix #1;(6) 37>34 Kunix #2, and (7) [if it happens] 37>34 Kunix #3. But who's gonna manage that, unfortunately.