I have used vSRX on AWS Software Version JUNOS 15.1X49-D133.
I can upgrade version 15.1X49-D133 to 17.3R1 .
Will there be a problem?
Thanks for your help.
Following article mentions the recommended way to change the version on vSRX instance running in AWS.
Rather than normal upgrade method (copying .tgz to vSRX and then using it to upgrade), I would suggest using the recommended method.