Amazfit GTR can't fix GPS

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kostaya

Member
Nov 22, 2010
12
0
Hey everybody,
i have similar issue with the GTR 47 mm - suddenly the watch failing to update fonts and in constant loop of "check for updates in app" and "failed to update font library". so i can't use it anymore. Tried to update the firmware (including base resources, rescources and GPS) with fonts and fonts only - with "notify fitness app" - but getting the same result. the only thing that i can manage to perform with watch is to unpair, then reset to factory and pair again with amazfit app. Tried all kinds of firmware and fonts versions.
Can someone please guide me what to do? is it possible to solve this issue at all? Or my watch is already bricked?
Thank you for help
 

aestheticsstrength

New member
Jun 2, 2020
3
0
47mm GTR here, now on 1.3.5.72. All ok here. GPS still usually locks in a minute or so.

If there's a write failure, maybe the Bluetooth connection is poor and the firmware is corrupted on its way to the watch. I would try:
  1. Delete watch's Bluetooth connection on the phone
  2. Delete and re-install Amazfit app (may not be able to recover your historical data after - I'm not sure). Don't open the app or try and re-pair the watch yet.
  3. Reboot phone
  4. Factory reset watch (does the watch work before it's paired to the phone, so you can reset it?)
  5. Start again, with re-pairing the watch and phone from the barcode on the watch face.
  6. Keep phone and watch close. Let it try all the updates again
If all that fails, maybe the watch is faulty

I tried all the above, the issue persisted. I sent back the watch to the dealer from whom I bought it from, they've sent me a new one with manufacturing date 03/2020

I'm 100% sure something's wrong with the last firmware updates.
Amazfit should not push their firmwares to update automatically on these watches, it is not okay to update firmware when connection is poor.

---------- Post added at 01:19 PM ---------- Previous post was at 01:18 PM ----------

Have you previously installed anything non-standard, like fonts?

Nothing.
 

haihai

Member
Apr 17, 2008
11
0
Xiaomi Poco F3
Today new firmware, still the same problem. I have the Titanium version and need from 2 to 5 min every time i'm start to running. And after, the precission is poor and over the buildings...
Waiting for the definitive firmware
 

immaxda

Member
Jan 12, 2009
21
2
Rome
Same problem here... But if you remove it from the wrist and turn upside down the clock (the hr sensor must see the sky) the gps fix will be a little bit faster.
Unfortunately the sensitivity of the gps antenna remain poor... I think this problem depends from the metal case and it's impossible to fix with a firmware upgrade.

Bye

Ps: excuse me for my poor English
 

Clint W

New member
Jun 24, 2020
1
0
Same GPS Fix issues...

Hey

I have been having the same problem for some time.

I installed the 'Notify....' app and followed the steps as recommended by previous poster.

This worked in the short term, but now, the GPS will only fix in one location - even if I'm outdoors with good open space overhead, it won't fix.

Watch has just done a firmware update. So I'm hoping that this problem might have been fixed but I'm not going to hold my breath!
 

invisiblewave

Senior Member
Sep 17, 2009
1,351
304
Just to add another voice to the GPS problem, in case the relevant team are reading this thread: GPS lock was fast when I first got the watch, but I didn't really use it until the gym closed. Since then it's hit & miss, even after checking for A-GPS updates. Sometimes it gets a lock within about 30 seconds, other times it takes up to 5 minutes. Then yesterday, I started it as I was walking, it failed to get a lock and a couple of minutes later was reporting that I'd walked 24 miles. This is my only complaint about this watch, and given the price point and battery life, it's a minor quibble for me, it's a shame because otherwise there's a lot to love about it, particularly now I've installed the McLaren face!
 

dbagy

Member
Nov 14, 2015
42
6
Yesterday updated to 1.3.5.79 FW. Update included fonts ans gps. Tried this morning on the same walking route as before. GPS lock is faster, around 5-8 seconds but accuracy still remains an issue if isn't even worse. We all need to face the fact that issue isn't software but rather hardware.
 

bladehu2

Senior Member
Aug 6, 2012
51
18
Yesterday updated to 1.3.5.79 FW. Update included fonts ans gps. Tried this morning on the same walking route as before. GPS lock is faster, around 5-8 seconds but accuracy still remains an issue if isn't even worse. We all need to face the fact that issue isn't software but rather hardware.
I've got only FW and RES, no gps nor fonts update. Moreover some users got 1.3.5.77 (as tizenhelp wrote that). Strange.
Thing is that if I use only Master for Amzafit app then watch can't find gps signal at all, after 5 mins either (a-gps info was refreshed with Amazfit app before the tries). If the Amazfit app and Master for Amazfit runs together, then gps lock is very hectic. Sometimes works, sometimes not, cca 50-50. But if only Amazfit app is running then gps always works, it needs less than 30secs to find gps position and it doesn't drop the signal. Between high buildings it's not too accurate, but there my phone neither.
 

invisiblewave

Senior Member
Sep 17, 2009
1,351
304
Mine updated to 1.3.5.77 and this morning was probably the fastest GPS lock I've seen, well under 10 seconds. Accuracy was very good too, it even shows where I crossed the road. Not sure what's going on with the units, I have everything set to imperial, but sometimes the app shows miles, and sometimes it shows km.
 

RunningNerd

Member
Sep 20, 2019
15
2
Just to update: I wrote off the GTR and bought a Polar Grit X. Yeah, the battery life is much shorter but it works. Connects to GPS, quickly, records the run accurately. Buy cheap, buy twice, sadly.
 

sailangkham

Member
Sep 28, 2019
13
4
Well, just to confirm what I thought would happen, dug the GTR out of the drawer into which it had been put. Reinstalled the app. and ran through the updates. Firmware to v1.3.7.16, GPS update and resources update.

Ran several checks on time to acquire GPS lock, which was between 50 and 55 seconds. At the same time and in the same place Huawei GT2 lock was around 5 seconds. With that length of time to lock there is no evident improvement in GPS performance with the GTR and it remains dire, so back in the drawer it goes.

I cannot imagine that anyone who has experienced the dreadful GPS on the GTR, and who needs GPS, is going even to consider the GTR2. Amazfit have shot themselves in the foot with this thoroughly disappointing and diabolical device.
 

arnold444

New member
Mar 30, 2016
1
5
works

Hahahahaha. Nope, gps is still sh...

for me I don't have any issue with the gps....I did the update 1.3.7.17 (gps update chip included just after), but even before I had no problem. I do bike and running and had no problem so far. I live in a village and the sky is relatively open, may be that people having problems are in urban zone with building or parks with big trees (????)
arnold444
 

bitkeeper

New member
Nov 1, 2009
0
0
v1.3.7.16 update actually broke GPS

The latest update (v1.3.7.16) actually broke GPS in my Amazfit GTR.
GPS track before update: yadi.sk/i/oPoMaTN1pOyvRg
GPS track after update: yadi.sk/i/0_hdc0bBOpxC0w
 

sailangkham

Member
Sep 28, 2019
13
4
The latest update (v1.3.7.16) actually broke GPS in my Amazfit GTR.
GPS track before update: yadi.sk/i/oPoMaTN1pOyvRg
GPS track after update: yadi.sk/i/0_hdc0bBOpxC0w

Like you I received v1.3.7.16, rather than the v1.3.7.17 that others have mentioned. Given the time taken to obtain a fix, I did not bother to test further but looking at your tracks it appears that your 'before update' is unacceptable, unless you were dodging trees, or drunk. What is clear is that no amount of firmware tweaking is going to help when the GPS antenna is inadequate. Amazfit should hang their heads in shame.
 

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  • 4
    In other discussion, isn't the CXD5603 Sony chip also used in Pace and Stratos?
    Is it just the antenna that's badly designed or missing altogether?

    According to https://www.sunnic.com/english/05_news/02_detail.php?NID=213 , shouldn't it support Galileo & BeiDou also?
    [/url]

    The Sony CXD5603GF is used in all their products, from Pace to Stratos 3. This makes sense, as Sony manufactures the only GPS chip with 6mW. They integrate it with external RAM and "antenna".
    All the models with their own OS share the same GPS firmware "18344,eb2f43f,126_gps.bin", that has not changed since months (May I think). So the software part, that directly controls the GPS hardware has not changed for months (although amazfit claims otherwise), just the interpretation of the GPS module output changed with the watch firmware update (e.g. outlier removal, averaging...)

    GPS uses L1, L2 and L5 frequency. However, only one frequency is used in not so recent hardware. This is L1=1575.42 MHz
    1*s544FU9v2X_JOH-0Cr63CQ.jpeg


    Now the usage of multiconstellation is limited to several factors
    Is the chip supporting besides GPS also Glonass, Beidou, Galileo? Yes, definitely
    Is the firmware supporting it? Do they pay Sony for the alogorithm? Probably not
    Is there an antenna design, with a wide enough bandwidth and amplifiers for the full range, to get signal above the noise level for the different bands? No.
    As I and other already demonstrated in this thread, Amazfit decided to not include a dedicated external GPS antenna for the watches with metalic bezel, but to use the bezel and housing itself as a kind of antenna. And this turned out to be a very bad decision. Amazfit "fixed" it by more A-GPS updates, so basically the chip has a better assumption of satelite ephemeric data. The chip can get this information itself from the GPS signal, as it is encoded within. However, this assumes the device has a good enough antenna to decode the data without error.
    3
    After a successful all-day test of catching fixes on the GTR (on average 20-40sec each time - but in a steady position when determining) I did a test today on GTR and old Bip at the same time on the same hand :eek:

    View attachment 4893211

    As you can see, the GTR catches the fix more slowly than the Bip, and has a worse signal quality that does not improve with time ... As for the battery, I had about 90%, what is worse, on the way back I wanted to turn on the registration and GTR will not get through these 6 min fixa already on the way, bip caught fix after 20 seconds of walking.
    In the GTR either the battery below 90% or the temperature -2'C caused that he stopped catching the fix ...
    3
    hey guys, I'm about to buy this watch (or the verge), but this GPS fix problem is a problem, the updates have fixed this problem? Can someone confirm? thanks
    If you want a beautiful watch and don't care about GPS, buy a gtr, but if you want a real smartwatch, with GPS working, buy an stratos 3.
    The gtr GPS is very inaccurate (even after last update my 9km walk is being measured with 5% inaccuracy, and maps shows bizarre movements. So gtr GPS is more a toy than a real useful resource.
    2
    Does anyone know something of what happened with Amazfit app??? I search in web but no success, does anyone knows if in IOS the app is still available? I sent a email to amazfit support, but they stopped answering me a long time ago
    Today the app has been update and now the compatibility turned ok

    New App dated 19/09/2019
    In the new version they have removed the "button" for check update in the watch

    Like the feedback in the next posts, with the new APP, HUAMI have reenabled the compatibility between APP and most smartphone.
    But the app crashes when trying to open one of the recorded workouts

    Please note that somebody told me in a italian amazit related facebook group!
    I would never take a look at the worouts in amazfit app, because most of all I share them into Strava, and check them in the Strava web portal!

    The only times i opened them were when I have to check how many times my GTR looses the GPS signal during workouts
    Because in Amazfit app this bug show some blanks between the tracked routes (bad thing... but correct), instead Strava connect the 2 stop-start point with a STRAIGHT LINE (mmmh, not so useful)


    Andrea
    2
    Every GTR model made before October 2019 seems to have a defective GPS.
    Some users write on FB that they bought the GTR in October and that their GPS fixes within 10 seconds and the accuracy is perfect
    TD0hjNl.png