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Darthagnon · 08-31-2026, 10:49 AM

I want to register the Kindle 4 as certain Kindle functions are blocked/hidden unless it is registered with Amazon. I've never owned a registered K4, but I understand that unless registered:
- Time setting will be missing
- Collections will be missing
- There will be a setup/register nag "book" on the homescreen

Newer Kindles lock Bluetooth settings, and have an even more annoying registration nag when unregistered. (They can however be easily fake-registered these days, though Bluetooth is still missing, which can be worked around with https://github.com/zampierilucas/kindle-hid-passthrough)

The time setting missing is important, as depending on the date of the Kindle's RTC, it can break KUAL. There is no way of setting the clock without this setting, except for inside of KOReader, which will be inaccessible if KUAL is timebombed. As far as I know, KUAL still has a timebomb certificate expiry, which means all my Kindles will brick themselves one day when my (grand)children are using them.

08-31-2026, 10:49 AM	#5
Darthagnon Enthusiast Posts: 42 Karma: 16824 Join Date: Sep 2020 Device: Kindle Voyage	I want to register the Kindle 4 as certain Kindle functions are blocked/hidden unless it is registered with Amazon. I've never owned a registered K4, but I understand that unless registered: - Time setting will be missing - Collections will be missing - There will be a setup/register nag "book" on the homescreen Newer Kindles lock Bluetooth settings, and have an even more annoying registration nag when unregistered. (They can however be easily fake-registered these days, though Bluetooth is still missing, which can be worked around with https://github.com/zampierilucas/kindle-hid-passthrough) The time setting missing is important, as depending on the date of the Kindle's RTC, it can break KUAL. There is no way of setting the clock without this setting, except for inside of KOReader, which will be inaccessible if KUAL is timebombed. As far as I know, KUAL still has a timebomb certificate expiry, which means all my Kindles will brick themselves one day when my (grand)children are using them. Last edited by Darthagnon; 08-31-2026 at 10:54 AM.