Libelium Waspmote Technical Manual page 117

There are 2 basic steps involved in OTA procedure:
Step 1: Waspmote requests a special text file which gives information about the program to update: pro-
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gram name, version, size, etc.
Step 2: If the information given is correct, Waspmote queries the FTP server for a new program binary file
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and it updates its flash memory in order to run the new program.
Figure: OTA steps via FTP protocol
Over the Air Programming (OTA)
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