Update README.md

groundstation/README.md

@@ -17,3 +17,45 @@ Also, a web SDR known as OpenWebRX can be run on the Pi so that other PCs or lap
 telemetry with only a web browser.
 
 See https://github.com/alanbjohnston/CubeSatSim/wiki/Raspberry-Pi-Ground-Station-Setup for the details.
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+If you have a Fox-in-a-Box-v3 Raspberry Pi image, here's how you can upgrade the version of FoxTelem:
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+Steps to Upgrade version of FoxTelem for FIABv3
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+On your Pi, open the Chromium browser and download the new linux version with this URL: https://www.g0kla.com/foxtelem/downloads/test/
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+Close Chromium.
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+Open File Manager (file icon at top)
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+Click on Downloads
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+Right click on the new version you just downloaded and select Extract To
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+Click on the little file icon next to Extract To then click on Desktop then Open.  Or, just type this in the Extract To box: /home/pi/Desktop
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+Click Extract
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+Close File Manager
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+You should now see a new Folder on the Desktop with the new version of FoxTelem.  The name of the folder is what you will type in a command below.  For example FoxTelem_1.12z1_linux
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+Open a Terminal Window (click on black box in top) then type:
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+rm FoxTelem
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+ln -s Desktop/FoxTelem_1.12z1_linux/ FoxTelem
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+Close the Terminal Window.
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+Now, when you run FoxTelem the first time, you may get an error such as this: Could not read properties file.  If this is a new release then the format has probably been extended.  Should I create a new properties file after reading as much as possible from the existing one?  
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+Click Yes 
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+You may then get messages saying there is a newer spacecraft file - click Yes each time.
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+You will need to do this for each profile of FoxTelem such as FIAB, CubeSatSim Ground Station, or Download.
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+You can now move the old FoxTelem version folder to the trash and empty it.
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