[HBH_AU]

Special thanks to katadelos!! And to NiLuJe!
Thanks also to hius07 (renameotabin) & spacequince (re getting KOReader & its prerequisites installed)

So - successfully jailbroke KOA3 running FW 5.13.7
Then:

• Applied "watch this" hotfix
• Also applied "K5" hotfix (er, don't think it's necessary as I don't intend to update beyond 5.14.1 but hey, I'm paranoid)
• Installed MRPI & KUAL (coplate version)
• Installed renameotabin to prevent OTA updates
• Installed KOReader (never used before, but sounds great)
• Went for broke & manually updated FW to 5.14.1
• Reinstalled the hotfix!!
• Registered the device

Finally:
Reverted the UI from 5.14.1 back to that of FW 5.13.6
This isn't a FW downgrade, it's just a way to switch the UI back to an earlier version,
by altering a line in the file /var/local/CHROME_CONFIG
Instructions from this reddit thread
More info:

Spoiler:

Requires: jailbroken device with FW 5.14.1, KUAL & KOReader installed.
NB: Can't see the var folder by connecting Kindle using USB - need to open it in KOReader’s Text Editor on the Kindle.
1. Open KOReader
2. Tap the screen at the top,
3. tap "Worktools" icon
4. tap Text Editor
5. tap Open file
6. tap ".." until you get the main root directory
7. go to Page to "2"
8. tap on var, tap local, change page to "4"
9. LONG tap CHROME_CONFIG to edit it
10. Change

isKPPChromeEnabled=true

to

isKPPChromeEnabled=false

Did encounter a hiccup during Step 7 of the jailbreak, but got through it.
Info here just in case anyone else experiences same problem.

Spoiler:

For some reason, when I entered ;dsts the Settings menu was greyed out.
Did a hard reboot, again entered ;dsts but the Settings menu remained greyed out.
Reboot again, but this time instead of entering ;dsts I used the alternative i.e. swiped down, selected the settings icon & was able to access the settings menu no problems.
No idea why (operator error? gremlins?) but maybe something to try if you have this issue.

Tip for any Mac users struggling to create .demo

Spoiler:

COMMAND + SHIFT + .

to toggle the visibility of hidden files.
Once hidden files are visible, you'll be able to make .folder

2 Comments on registering the jailbroken device

Spoiler:

1. Rather than using our wifi router, I connected to wifi using my phone as a hotspot, & as soon as I registered the device, I told Amazon to forget the password AND ensured the kindle forgot the hotspot.

2. I finally got to resolve a really annoying issue on my Kindle - a LOT (more than 50) of old, empty collections that I'd deleted from my kindle kept showing up on the device.
Yes, I DID also delete all of these collections from the Amazon account itself & synced.
But the rotten things STILL kept showing up on the kindle (how is that even possible?).
So I registered the device at a new Amazon account, & am finally free of the multitude of ghost collections that haunted my kindle.
(As for all the books bought on the previous account - fortunately, Calibre & appropriate plugins mean my books are all easily accessible...)

THANK YOU again to everyone who made the jailbreak possible

PS - I was wondering if there are plans to update LibrarianSync to work on the KOA3 with FW 5.14?
I can't help with the coding, but fwiw am more than happy to donate to caffeine fund of anyone working on this, if that's any help.