Complete

Published app doesn't update or install on some devices

I started getting a lot of reports that my "Universal App" doesn't update for some users. If they delete it, they can't install it back. The app doesn't use Garmin Pay.

I updated the app with the most recent SDK and published an update - it was accepted without any issues. However, when I tried updating it on my watches, one of the watches had exactly the same issue as other users. On Fenix 8 AMOLED, the update was queued forever. When I uninstalled, I couldn't install it back - it would say "installing", then briefly "settings", then back to "install". In log file I found a bunch of these:

---
Error: 'Signature check failed on file: DB1A9BFA'
Time: 2026-05-03T01:40:38Z
Part-Number: 006-B4536-00
Firmware-Version: '21.39'
Language-Code: eng

What is weird, is that this app updated on my other watch Enduro 3 without any problems. Same user account.

Same thing happens to my other app (HYDRATE+), except that watches switched (installs on Fenix 8, but not on Enduro 3). Users complaining too:

The Connect IQ user A Mr has sent you the following request regarding your app "HYDRATE+":

hi, I can't get it installed. IQ just says installing and then the button us reseted. any suggestions?
THX!
MobileDriveway

  • To help team Garmin debugging this: I don't think this is a watch firmware issue but something on the ConnectIQ Servers, as I'm still able to sideload widgets on my Venu 4 for example. I'm aware the newer models only have apps, music, data fields and watchfaces as app type (not widgets), but widgets were always still converted to apps automatically for the newer devices. This allowed us to support older models and newer ones in the same appid.

  • User-complaints are still piling in. Standard-reply is now that this is a Garmin-issue outside my circle of influence and depending on how much Garmin cares about ConnectIQ it might be fixed some day or not.

  • I’m new to Garmin so I wasn’t sure if it was user-error, but glad I did all of the right steps to diagnose and it appears to be a Garmin-side bug. Thankful for the developer, Aaron, for letting us ksmiling face with heartsw he’s on it! Love supporting developers that have a passion for their products! smiling face with heartsMuscle

  • After over 2 hours trying to install the plank app I finally gave up! I tried everything from rebooting my phone, apps, garmin connect, laptop and then software updating all of the above too! It’s a pity as the other hero apps I have which are push up and squat are perfect and downloaded instantly. I hope Garmin sorts the issue out for the developer and us as buyer/users. 

  • I started getting many reports of this for several apps starting April 30th. Multiple apps, multiple watches and I didn't update the apps. These are applications with glances. I rebuilt some of the apps with the issue using the latest watch files and SDK 9.1.0 and still have the issue. Tried building with an older SDK, but it complains about minimum supported CIQ version now.