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Recovery and failure handling

There is currently no public, verified procedure guaranteed to recover every S1 Active brick. This page reduces risk; it does not remove it.

Before any OTA

  • keep both watch and phone comfortably above the minimum battery threshold;
  • use a stable Bluetooth connection and disable phone battery restrictions;
  • verify the model and exact base version;
  • check files and hashes;
  • retain a legally obtained original firmware copy;
  • change only one component at a time;
  • capture logs and note the start time.

Classify the problem

Symptom First cautious action
frozen UI but notifications still arrive wait, document, then try a normal reboot
logo remains after an update do not repeat OTA blindly; preserve logs and version details
companion app cannot see the watch check Bluetooth pairing and account state before repeated resets
OLD VERSION error the delta does not match the base; do not force it
progress appears frozen determine whether progress is real or merely stale before interrupting

What not to do

  • do not send the same package repeatedly hoping for a different result;
  • do not change firmware, companion app, and pairing at the same time;
  • do not use packages for similar-looking models;
  • do not delete logs or original inputs;
  • do not present a factory reset as a universal firmware recovery method.

Useful failure report

Open an issue containing the model, version before and after, package SHA-256 without attaching it, progress percentage, complete error message, timeline, and observable device state. Remove personal identifiers and full Bluetooth details.