SparkFun RTK Express, Problem Connecting to Bluetooth in Android

[jeffersonkim]

I haven’t tried Firmware update as discussed in this post:

My new Sparkfun express plus pair problem

Hi there, I got the Sparkfun RTK express plus kit this week, and am having problem pairing it with my new google pixel andriod phone. I changed the Sparkfun express to rover mode with BLE bluetooth, and eventually I see the tiny display will show the bluetooth icon after fiddling around the bluetooth configuration on the andriod phone. However app like SW Map cannot connect with it. If I select GNSS Status, it’s just show blank. What’s going on? Can someone from Sparkfun please help? I had high hope to make good use of it, but disappointed with the problem before I could even use it.

Is there an easy way to download the correct BIN? We are Firmware 4.0