Download software
https://www.juniper.net/support/downloads/?p=srx320#sw
...
get the source link from the juniper download website
file copy "https://cdn.juniper.net/software/junos/18.3R1.9/junos-srxsme-18.3R1.9.tgz?SM_USER=jkriker&__gda__=1538133362_08dde5d15a6a7599f99df990b77adea1" /var/tmp/junos-srxsme-18.3R1.9.tgz
request system software add no-copy "/var/tmp/junos-srxsme-
1118.
4R43R1.
4-domestic9.tgz"
request system reboot
Method 2: download from the laptop browser then copy to the SRX
sftp file to /cf/var/tmp/
request system software add no-copy /var/tmp/junos-srxsme-11.4R4.4-domestic.tgz
request system reboot
Upgrading the VDSL PIC Firmware
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