I meant the JTAC recommended version is 7.4r8
You will need to open a customer care case to get the privileges.
Two Options to get more help from Juniper:
If outside US or Canada, use a country number listed from one of the regional tabs above.
Web: Fill out the form here:
https://tools.juniper.net/entitlement/requestAddlResources.do to request access to the following urls:
Thank you very much guys. I just put in a request to Juniper to provide me the access to download the file. Hope my issue will be resolved soon.