I can’t connect to the HM-10, it gets: Conecting… Connecting…
Not sure what your Invalid Header error is about?
But there are lots of recent topics about BT connection issues… check out this link…
https://community.blynk.cc/search?q=BT%20HM-10%20connecting%20order%3Alatest
I get this error after changue the NOTI to AT+NOTI0, before that, I have a OK CON PROBLEM. After testing I realized When I try to pairing in android settings and I left open the mensage : open the device app for pairing, I get the packet lost menssage, and OK CON PROBLEM, if not just get connecting, connecting,…
Android’s app’s beta 2.27.2 build has support for the latest library changes in BLE/Bluetooth - you can ‘join beta’ at Google Play page of Blynk app and try it.
Now It’s working, but I had problems when I wanted to become a tester. In Android 9 the option was not present.Hovewer I used other cellphone to activate the option,then installed in play store (Android 9.0).
Wow, I’ve never heard about such issues - it joins beta on mine Pixel with Android 9. Thanks, we’ll investigate it.
You can install the latest library version (from github master), which hopefully should fix the issue as well
Please switch to library v0.6.1, that also contains a fix for Bluetooth connectivity: https://github.com/blynkkk/blynk-library/releases/tag/v0.6.1
Thanks, now it works even I tried it with iOS and it works fine.