If anyone who is still in despair not been able to follow the suggested download that
@WalkerOfTheDay kindly found and don't have the technical nouce to do this and given up on their TT GPS watch, I have found a cheap alternative for those looking for that option listed below.
(BTW the suggested download does work and I have it installed and runs perfectly and it will keep my TT watch running for now).
The cheapest alternative GPS watch going I found as a low budget alternative is this Chinese made GPS smart watch. It comes under a few variations on model numbers as listed below. Specs and reviews are scant, the watch will run on its own app version and will share with Apple Health, Google Fit and upload to Strava.
(I have the non GPS variant and it works perfectly with IOS17, records and sends activity to Strava also, using phone GPS via the app, with additional HR, sleep, steps and stress, VO2, Music, messages etc, but I am tempted to try the GPS version anyway)
I don't know the original manufacturer, but ones I have found seem to be associated to Very fit or V-Fitness app.
Google these variations as there are probably more of the same on Alibaba, Amazon and Ebay with different model identification.
I cant vouch for accuracy or reliability, but as such a cheap alternative, its not a big loss replacement.
It does appear to have displayed activity metrics on screen during an activity compared to the TT watch, not as selectable, but there is one shown, there may be more. Being able to upload the GPS file to Strava a win, but downloading to the device may not be possible. All the other metrics seem to be there like heart rate and elevation.
VF-SMTGPS
ID205G