[m4te]

Originally Posted by spacequince

It took some digging to get KOReader and its prerequisites installed, so I’ll put the info here. All downloads besides renametobin and KOReader come from the NiLuJe's Snapshots thread.

MR Package Installer and KUAL
MR (mobileread) Package Installer
KUAL (Kindle Unified Application Launcher)
1) Extract mrpackages and extension folders from kual-mrinstaller-1.7.N-r18896.tar.xz to your Kindle’s root folder.
2) Extract Update_KUALBooklet_e3deabf_install.bin file from KUAL-e3deabf-20220213.tar.xz (coplate version of KUAL) to mrpackages folder which is in your Kindle’s root folder.
3) Eject you Kindle and open the search on it and type ;log mrpi (installs KUAL and MRInstaller).
Source: reply by FireFrog on this jailbreak thread, also see next reply by voidnull

renametobin
Prevents OTA updates from Amazon so you can make sure your Kindle doesn’t update which could blow away your jailbreak.
1) Extract renametobin folder from renameotabin.zip to the extensions folder of your Kindle.
2) Eject your Kindle and launch KUAL on it.
3) Tap “Rename OTA Binaries”, then tap “Rename” (Only tap “Restore” when you want to re-enable OTA updates or if you want manually update firmware via "Update Your Kindle" from Settings menu on Kindle)
Source: renametobin reply by re4om on this jailbreak thread

KOReader
1) Extract extensions and koreader folders from koreader-kindlepw2-v2022.03.1.zip to Kindle’s root folder.
2) Eject your Kindle and launch KUAL on it.
3) Tap “KOReader” then tap “Start KOReader”.
4) Wait ~10 seconds for KORreader to open.
Source: Installation on Kindle devices

Edit 04-29-2022: Step 3 of renameotabin update suggested by re4om and correction of MRInstaller to mrpackages folder pointed out by lovegamehp

Thank you katadelos for the jailbreak, and thanks spacequince for the post-JB summary. It worked like a charm on my PW3 (after having skipped steps 3-8 - I was able to just start the demo mode, and after getting the Application error).

By the way I wasn't able to quickly find this information, but on 5.14.2 (cannot comment on any other FW) on a Wifi+3G model, it is not possible to skip the registration screen. Just restarting the Kindle did the trick though and I could continue without registering.