Hey, You are running Debian stable which provides Iceweasel 24 (it will be treated like Firefox 24 (ESR)). According to GNU LibreJS version history [1] the last version supported by Iceweasel 23 is 'Version 5.4.1'. You can download it from gnu.org [2]. I do not have access to any Debian stable machine at the moment (so I was unable to test it) but [3] should work.
[1] https://addons.mozilla.org/en-US/firefox/addon/librejs/versions/ [2] ftp://ftp.gnu.org/gnu/librejs/ [3] ftp://ftp.gnu.org/gnu/librejs/librejs-5.4.1.xpi General pseudo-package [4] is by no means related to iceweasel package, so I will reassigning your wishlist bug there. [4] https://www.debian.org/Bugs/pseudo-packages Thanks for report! Regards, T.
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