PineTime runs only with 3.3V via pogopin
Now that your device has started with the pins connected to the pi, does it still runs if you disconnect them?
Maybe pinetime-updater failed for whatever reason, and the device was stuck in programming mode. I guess that connecting the pins to the pi issued a reset, and you should be good to go.

If it stops when it's not connected to the pi, maybe the battery is empty and that it works because the pi is feeding power to the pinetime? Have you tried to charge your device?

If you have a stlinkv2, you can try to follow these instructions to flash your device using openocd.
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RE: PineTime runs only with 3.3V via pogopin - by JF002 - 12-18-2020, 05:45 AM

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