I have questions about jailbreaking the kindle.
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I have jailbroke my kindle PW3 following this thread
https://www.mobileread.com/forums/sh...d.php?t=267541 and the snapshots of NiLuJe, downloaded KUAL and all. But I forgot to turn off the wifi and then it got updated to 5.13.6 today

. I wonder how it is done since I followed the methods to block the update.
I desperately want a jailbroken kindle for a better translator than bing translator. As I read through the threads in this site, it seems impossible to revive the jailbreak when updated to 5.13.6.
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So I have decided to purchase another used kindle(pw3 or pw4).
But I was wondering if it is possible to jailbreak the kindle pw3 or pw4 without serial hacking and the soldering, just by inserting the file in the root folder of kindle. As I read the first post on this thread, it seems to say that it does not need serial hacking, am I right? So, is the serial hacking not a prerequisite anymore? Or does it differ by which kindle you own?
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Additionally, this is not really an relevant question to this thread, is it possible to use google translate through koreader just by highlighting a sentence?
https://www.mobileread.com/forums/sh...d.php?t=104386
I thought this hack was possible, but I found it is too outdated when I succeeded jailbreak. I didn't have time to try out koreader before my kindle got updated.
Is it also possible for me to change google translate to another translator site if what I said above is possible?