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it says that video dowloader helper isn't compatible with this version firefox when the add on simply states version 36 or higher

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  • Last reply by James

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I have an lg 70 optimus android

I have an lg 70 optimus android

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It sounds like you were trying to install a Extension made for desktop Firefox (on Windows, Mac OSX and Linux) and not from Android section.

The Extensions for Android Firefox are listed in https://addons.mozilla.org/android/ as you change section on top where it says Other Applications.