Patch Flash File

For Flash to still work on your computer..
(this is for it to work on OFFLINE / NON INTERNET ACCESS)
(the latest version being 32.0.0.445 or higher)

You'll need to take ownership and modify the security permission for you or an admin to modify files in
32-Bit - x:\Windows\System32\Macromed\Flash
64-Bit – X:\Windows\SysWow64\Macromed\Flash

You’ll need to take ownership of the folders and the flash.ocx files in each of those folders.
Afterwards, grant yourself administrative, or at least write permissions to the files and folders.
Until this is done, you won't be able to save the modified files.

In order to patch flash, you’ll need to download a HEX EDITOR to change the flash.ocx files in both folders.
HEX EDITOR RECOMMENDATION
(HxD - https://mh-nexus.de/en/hxd - It's Freeware)

Defuse flash player time bomb:

After opening the ocx files In a HEX EDITOR Search for the Time bomb trigger

SEARCH FOR THIS
00 00 40 46 3E 6F 77 42

AND REPLACE IT WITH THIS
00 00 00 00 00 00 F8 7F

NOTE: The Flash files (ocx’s) (and Flash64) will always be write protected, if you can't save it, ensure you did all the steps at the top

SAVE THE OCX files back in their original locations and you should be fine.

TO DISABLE ANY UPDATES
If it doesn’t exist already, create a file called mmc.cfg in both folders above and do the following to Disable EOL (End of Life) uninstall warnings:

Disable auto updates when installing
    Add "EOLUninstallDisable=1" to mmc.cfg in C:\WINDOWS\system32\Macromed\Flash
    (C:\Windows\SysWOW64\Macromed\Flash on 64-bit)


I have no guarantee of this working on your browsers, nor have i tested it, or intend to. But for standalone applications, you'll be fine.