The release 11.4R7.5 is not downloadable anymore. Is it possible to extract the firmware release from an existing device?
Model: srx240hJUNOS Software Release [11.4R7.5]
Could you help me to extract it?
You can create a snapshot to a USB making it a bootable and use it to boot another SRX device of the same model.
Refer to https://kb.juniper.net/InfoCenter/index?page=content&id=KB29811 for the steps to be followed.
Thanks and Regards,
Pradeep Kumar M
Also if you have an active support contract you can open a ticket and get copies of no longer posted firmware from support.