Kobo firmware 3.8.0 and kobohack-j 140823 and library patching

After a retracted firmware (3.5.0), an intermediate firmware (3.7.0) targetting the new unit H2O, there is now a new firmware for all devices (3.8.0). This firmware includes support that was previously available in patched kernels, namely adjustment of the brightness with finger slides.

Kobo Logo

As always, the update procedure is well documented, see tag Kobo.


Links to the firmware are available at this thread at MobileRead, in particular in this post. The firmware is for Glo/Auro HD is here: kobo-update-3.8.0.zip.


As usual (see previous posts), I try to get ssh running on my Kobo, in addition to some library updates. For this I use the kobohack-j project. The latest release is 140823 and is targetting firmware 3.3.0 and up. Download from here version 140823.

I installed both KoboRoot and KoboRoot_hack, and all is working without problems so far.

libnickel patching

There is (since some time) a good thread how to patch libnickel (and now also another library) at this thread at MobileRead. The first post contains a download link for a zip file that works on both Windows and Unix (including Mac), including the latest release.

My Kobo Glo is currently running with the following patches enabled:

  • Unitless ePub line height: see this post
  • (Synopsis font size fix – fixed in the new firmware)
  • Custom reading footer style
  • Freedom to advanced fonts control

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