After pre upgrade steps1. place the 6.4 jar from package share in the
same path as 6.2 jar. Delete the 6.2 jar.2. run 'java -Xmx4096m -jar
aem-quickstart.jar -unpack3. I replaced crx2oak in
/crx-quickstart//opt/extensions with latest version of it.4. ran content
migration in local using java -Xmx4096m -jar aem-quickstart.jar -v -x
crx2oak -xargs -- --load-profile segment-custom-ds5. execute upgrade by
java -jar aem-quickstart.jar -r
author,nosamplecontent,crx3,crx3tar,crx3tar-nofds -p4502 (crx3t...