I upgraded my Motorola ES 400 firmware and lost the PTT key mapping.

We believe that was caused by a change in the firmware. To make the side button available for Zello please perform the following steps:

1)      Go into key remap utility and select “Library – reset All” to establish a common baseline

2)      Next map the PTT button to hard keyboard – PTT (short press) [basically remap PTT back to itself]


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