Vera jailbroken but cannot find kindle in computer

[Heidi]

Kindle Paperwhite6, firmware 5.20.1.0.2. Jailbroken successfully with Véra and the device could be normally used. Afterwards I cannot find the kindle subject when connected to computer.
What I’ve tried:
– Download the Mac send-to-kindle app and try to use the usb file manager. The connect device button doesn't respond after spinning.（Mac m5）
– Restart kindle.
– Use Windows 11 laptop. Still cannot see that in device manager.
– Change 4 cables（including the original cable bought with kindle）. No answer at all.

Thus I can still use my kindle. But I cannot go back jail or install other systems. Will there be any risk keeping it this state？Is there any known recovery method for this state?