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Old 07-18-2019, 03:44 AM   #61
DokZoidberg
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It's done!!!! Thx
I made a restore of my KT4W and at settings I used english as the language; but I think this is not important.
Then I installed the factory firmware
and then I decompressed the kindle-jb-factory-1.3-r16160.tar.xz with winzip in a windows computer. I suspected about this because I had decompressed it on my mac with "the unarchiver" and the merchant.zip file seemed to be a direct access, not the real file.
So I did the search procedure with the new merchan.zip file on my kindle and I got the you are jailbroken.txt document.
Let me now continue with the procedure installing the hotfix jailbreak package.
Thanks very much to you all!!!!
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Old 07-18-2019, 11:59 AM   #62
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Yep, stupid archiving software strikes again.

Also, for the record: the de-register probably didn't help. I don't remember if it strips the relevant bits from a factory FW, but it might.
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Old 07-20-2019, 05:48 AM   #63
0ripkindle
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KT4 on 5.11, serial G0910L. I used to own a jailbroken KPW1 and it worked very well. Because of all the new features in KT4, I'm considering jailbreaking for a few features. It would be very helpful if someone could verify these for me.

* Changing font rendering options
* Custom screensavers

That's it!

I hate the new interface and the fonts seem subpar. I guess the UI is here to stay, but if I can do something about the fonts, I should.

What are the risks (if any?) associated with jailbreaking with this method? Have there been any kindles (KT4) permanently bricked/damaged from this?
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Old 07-20-2019, 08:39 AM   #64
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Depends on what you mean by "changing font rendering options", exactly.

Other than that, unless you do something truly epically wrong, like picking the wrong factory image, it's pretty harmless.
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Old 07-20-2019, 11:31 PM   #65
0ripkindle
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>Depends on what you mean by "changing font rendering options", exactly.

There was an option for changing the hinting in the fonts hack. That was really great, my custom fonts (and some of amazon's!) look like crap without it. Is it still installable on my 5.11 KT4?
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Old 07-21-2019, 12:53 AM   #66
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What is a factory firmware and what do I do with the firmware image? SOrry fo the stupid question, I'm really confused here.
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Old 07-21-2019, 01:34 AM   #67
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Then, no, that stopped being possible around the time Amazon introduced custom font support (i.e., 5.8-ish. Definitely b0rked on 5.9, as that's what I checked on). The hack will gracefully disable that feature to save you from a soft brick.

Last edited by NiLuJe; 07-21-2019 at 08:23 AM.
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Old 07-21-2019, 02:20 AM   #68
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Thanks for the help, I guess I won't be jailbreaking my device, then.
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Old 07-27-2019, 04:13 PM   #69
Rehim
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how to jailbreak 5.12.1 G090WH copied merchant.zip root directory and typed ;merchant and pressed back but no results
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Old 07-27-2019, 04:35 PM   #70
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@Rehim,

There is no jailbreak for this firmware.
Details here: https://www.mobileread.com/forums/sh...d.php?t=320564
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