Update file to update phone in Android Recovery

[Android Central Question]

I work for a company. I need to update a lot of phones. I use smart switch currently and this is an upgrade from manually using the system updates. We do not allow the users to individually update phones for security reasons. The phones are sent to us to update from an older android version to the new one.
I would like to find out how to obtain the individual update file for android version 8 (to be used with Samsung S7) and android version 9 (to be used with Samsung S8). This way I can put it on multiple SD cards and go into Android recovery mode to update the phones that way instead.

Does anyone know how to find the update file for Android version 8 and version 9?

Thank You!

 

[anon(10614692)]

Check out XDA Forums. Some people used to capture the OTA files

 

[hallux]

Samsung phones? Are the files available from sammobile.com not what is needed here?

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[mustang7757]

Use samfirm or frija to download the files to your computer then flash with Odin, should take no more then 20 minutes all together.