Abstract: “In today’s word, mobile devices are changing regularly. Thus the supporting software and applications needs to be regularly updated. Firmware over the air (FOTA) updates is a fresh technology for easy updation of mobile devices. However the FOTA delta size for updates is increasing considerably. Thus optimizing the network consumption for downloading the updates is a big challenge. Large FOTA delta size implies greater network bandwidth consumption while downloading the updates. This paper addresses this problem and aims to reduce the delta size for the FOTA updates. Various algorithms were implemented and their performance was analyzed. The analysis shows that the percentage reduction in delta size is reasonable”

Keywords: FOTA, delta, fingerprints, chunking, hashing, simHash, TTTD.