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If you need to run 32-bit Firefox or manually install 64-bit Firefox, you can simply download and re-run the Windows (32-bit or 64-bit) Firefox installer from the Firefox platforms and languages download page. You can still manually install 64-bit Firefox, if you choose.
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Firefox version 85 (released on January 26, 2021) shipped without Flash support, improving our performance and security. Firefox version 84 was the final version to support Flash. Adobe and other browsers also ended support for Flash at the end of 2020.
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Also, with the jump from 32 to 64 bits, a security feature called Address Space Layout Randomization (ASLR) works better to protect you from attackers. Firefox ended support for Adobe Flash in Firefox at the end of 2020, as announced back in 2017. Here’s the key thing to know: 64-bit applications can access more memory and are less likely to crash than 32-bit applications. What’s the difference between 32-bit and 64-bit?
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How much less? In our tests so far, 64-bit Firefox reduced crashes by 39% on machines with 4GB of RAM or more. That means you get a more secure version of Firefox, one that also crashes a whole lot less. I am not familiar with Linux, but I think the best way to find out is to ask Linux support.Users on 64-bit Windows who download Firefox can get our 64-bit version by default. As Adobe will abandon flash, will the operating system be able to continue running these old versions of flash player? However, a question arose: these browsers do not have the built-in flash, that is, it is necessary to install it on the computer so that the visitor can interpret it.
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