If you have a Pebble watch, don’t download the Pebble 2.1 update. It could very well brick your smart watch.

According to Smartwatch Fans, a number of people are finding that the updated Pebble app is killing their Pebble watches:

We’re getting tips from a slew of readers who have updated their Pebble app today, only to be left with a non-functioning watch. The update is crashing at launch and rendering itself useless, making for a lot of unhappy Pebble owners.

Over at iMore, senior editor Richard Devine confirms: