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Jailbreak e-reader: theory?

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  Jailbreak e-reader: theory? Unknown <dog@gmail.com> - 2014-04-07 01:11 +0000
    Re: Jailbreak e-reader: theory? Michael Black <et472@ncf.ca> - 2014-04-07 13:07 -0400
      Re: Jailbreak e-reader: theory? Vilmos Soti <vilmos@soti.ca> - 2014-04-07 13:48 -0700
      Re: Jailbreak e-reader: theory? Unknown <dog@gmail.com> - 2014-04-22 02:57 +0000
        Re: Jailbreak e-reader: theory? Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2014-04-22 07:45 -0700

#2282 — Jailbreak e-reader: theory?

On Fri, 28 Mar 2014 22:18:24 -0700, Dave wrote:

> not.socialnetwork@gmail.com wrote:
> 
>> Going to a remote, isolated location for a few weeks, may be a good
>> reason to buy an e-reader. But since e-readers are said to actually be
>> linux/android computers, a linux user would not want to be restricted
>> to using the e-reader for reading text.
>> 
>> It's commonly claimed that various intended-to-be-closed devices can be
>> 'jail-break-ED' to expose their file-tree.
>> 
>> Theoretically, I can't believe that my 80's pocket calculator can be
>> hacked, from the provided input facilities: the keys.
>> 
>> An e-reader has an even smaller <vocabulary of keys>. And the <data
>> files> would be read-only.
>> 
>> So how could the user possibly gain control ?
> 
> I'm sure if you looked on the web you'd find out how to hack a Nook e-
> reader. I did, and I now have one with a web browser and other Android
> apps running on it quite happily.

Thanks, so far such search has failed. Rather than just a <press A, press
B,..> description, I need a hardware-engineer's theoretical explanation.
Like: to get the battery-powered rPi, with no display nor input, to boot
into playing a sequence of *.wav; you can bypass the login, and set the
initial 'task', by editing /etc/inittab and what imediately follows.
And then to navigate the selection of files played with no input, except
the powerswitch, you [time modulate] cut the power at 'selected times'.
Yes, I admit, it's easy to forget the details [that's why the Chinese 
invented writing], but if someone understood the underlying principles,
of 'jailbreaking an ereader',they could explain them.

IMO most of the code would be in ROM and therefore in-accessable.

WDYS?

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#2283

On Mon, 7 Apr 2014, Unknown wrote:



> IMO most of the code would be in ROM and therefore in-accessable.
>
Opinion doesn't count.  It either is or isn't, and guessing or giving an 
opinion means nothing, you need to look at fact.

Since I couldn't use my Kobo Mini until I had gotten it online, I suspect 
like my Blackberry Tablet it wouldn't do anything until it was loaded with 
the latest firmware.  SInce that could happen, it can't be loaded in ROM, 
it has to be flash memory.

    Michael

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#2284

Michael Black <et472@ncf.ca> writes:

> Since I couldn't use my Kobo Mini until I had gotten it online, I

Actually, it is rather easy. Or at least it was on the Kobo glow.

Just mount the ereader under linux, and there is a sqlite file
somewhere, and all you need to do is to make one change with
> the standard sqlite program.

I did a couple of years ago so I don't remember the details, but
you can find this online.

Of course, this will limit your device's usability, but my main
concern was to ensure that my daughter is not spied upon.

Vilmos

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#2331

On Mon, 07 Apr 2014 13:07:57 -0400, Michael Black wrote:

> On Mon, 7 Apr 2014, Unknown wrote:
> 
> 
> 
>> IMO most of the code would be in ROM and therefore in-accessable.
>>
> Opinion doesn't count.  It either is or isn't, and guessing or giving an
> opinion means nothing, you need to look at fact.
> 
> Since I couldn't use my Kobo Mini until I had gotten it online, I
> suspect like my Blackberry Tablet it wouldn't do anything until it was
> loaded with the latest firmware.  SInce that could happen, it can't be
> loaded in ROM, it has to be flash memory.
> 
And where would the code be that "had gotten it online" ?

>     Michael

==TIA.

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#2333

On 04/21/2014 07:57 PM, Unknown wrote:
> On Mon, 07 Apr 2014 13:07:57 -0400, Michael Black wrote:
>
>> On Mon, 7 Apr 2014, Unknown wrote:
>>
>>
>>
>>> IMO most of the code would be in ROM and therefore in-accessable.
>>>
>> Opinion doesn't count.  It either is or isn't, and guessing or giving an
>> opinion means nothing, you need to look at fact.
>>
>> Since I couldn't use my Kobo Mini until I had gotten it online, I
>> suspect like my Blackberry Tablet it wouldn't do anything until it was
>> loaded with the latest firmware.  SInce that could happen, it can't be
>> loaded in ROM, it has to be flash memory.
>>
> And where would the code be that "had gotten it online" ?
>
>>      Michael
>
> ==TIA.
>

	Just enter "jailbreak Kobo Mini" in your Google search window and start 
reading.  It likely can be done.  Most of the older tablets, e-readers 
and phones can be dealt with apparently.  Some of the newer
tablets have to be back-graded on the firmware before they can be
modified via the unlocking of the boot-loader and rooted.  Apparently
the newer firmware on tablets took advantage of a strange law against
modification of your paid for hardware.
	AFAIK nearly everything is in Flash.

	Backup everything!
	
	Good luck with your Kubo Mini and get back to us about your
results.

	bliss

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