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If there are no problems with the tools you are currently using, updating the tools is not required.
v1.19
Updated CV tool provided by SoC vender (CNNGen Ver.2.5.2.0.1210)
v1.18
Updated CV tool provided by SoC vender (CNNGen Ver.2.4.2.12.1113)
v1.17
End of support for SSD using caffe
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