51sl es

  1. Masani

    EF Johnson 51SL ES - Firmware Update Required

    Hello and thank you in advance for the help with the below! I have recently gotten myself an EFJ 51SL ES. Below is the currently programmed firmware version: Firmware Version: V 6.8.6 With this is mind, I found myself drowning in information courtesy of the below site...
  2. W

    EF Johnson 5100 "Disabled"?

    I am attempting to program my 5100 but after programming and writing the radio, the radio displays "Disabled" on the p25 channels. the zone name pops up then goes straight to "Disabled". Has anyone seen this or know why this would be doing this? After research, it would appear that there is a...
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