My BT 2.0 worked fine until my phone updated to Lollipop, Are you both using Android 5.x Lollipop? Pretty sure this issue can not be solved with ALP firmware since the BT 2.0 chips operate at higher speeds so its a BT issue between the phone and the BT module. We still have a few BT modules available if you want to send it back and try another one? Some have had better experience with a replacement.
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