I can confirm that watchguard jailbreak (r03) works on Kindle Voyage 5.13.6. Thanks katadelos and the team!
A couple notes:
- despite updated version supporting en_US, only en_GB worked for me. When I tried jailbreak on a Kindle set up as English (United States), clicking on "Getting Started" guide did not reboot the device, even though ;demo debugging said that the extension with correct MD5 hash was loaded. Might have been a glitch on my end though.
- the hardest part was mastering the secret gesture :-) If someone else is stuck on "This demonstration device is either missing content or is disconnected from the network.", there is a YouTube video demonstrating the two finger tap / swipe (found it here)
- spacequince's post-jailbreak sequence works great. Except, I used original KUAL version (not coplate's). Not sure what's the difference in case of a Kindle Voyage though.
- for posterity/Google-ability, in case mega.nz link suffers bitrot in the future, the watchthis-jailbreak-r03.zip has the following hashes: SHA1 =
5e828629bb9635e68cbc3221b344bb0902577c7f, MD5 = d73a76dab7824840972ad51f377dede1, SHA256 = 38ed5dadd0f98b1ac846967fbde14aa0543fc824207ee18891 59993c87a2bfa3.
Thanks again, everyone, this is very exciting!