Hi.

I used this jailbreak when it was first released, and it's worked fine for using Koreader. However, it's now stuck in a bootloop. I'm not sure why, or what I can do to revive it. I've kept the device in airplane mode, and I haven't tried to update the device to a different firmware.

There is not a lot of information online about this, but there are some reports of this happening to PW5 devices in particular. (https://www.mobileread.com/forums/showpost.php?p=4460911&postcount=992)

I'm just posting this as a warning for PW5 users, one day your device will reboot, and become bricked.