Help on SERIAL JB Hardware

[sibero80]

Hello everyone! Greetings from Colombia!

I'm trying to JB my PW2 5.9.0.2.

I'm not a overly technical person (only know very basic electronics and coding), but I'm confident I can achieve the Serial Jailbreak following the posted instructions.

However, adquiring exactly the identical hardware described in some threads might be a challenge in my country (I usually have to wait months to get things shipped from overseas).

I have this hardware laying around and I'm wondering if it could do the trick.

Option 1:
- NTC CHIP SoC Board:
This one has UART and a 1.8v pin, but never used it as a UART "client" for other devices.

• https://docs.getchip.com/chip.html#uart
• https://docs.getchip.com/chip.html#how-you-see-gpio

Option 2:
- Chinese PL2303TA USB-to-RS232
I bought this one to play around with an arduino board that I'm still waiting to arrive, so havent had the chance to use it, let alone know how to be certain it will communicate over 1.8v instead of 3.3v (in the spects it says its compatible with both voltages).

• https://www.aliexpress.com/item/1pcs...311.0.0.UBmABC

¿Could someone point out which would be a better fit?

On a side note, would the Serial method work on Firmware 5.9.0.2?

Thanks all for any help you can provide!

[lucasmpr]

Hello,

I don't think any of them will work. You need an UART that works with 1.8v.

For the 1st one having an pin that has 1.8v says nothing about how the UART operates.

For the 2nd one it is clearly 5V. It will not work either.

You need to find one that works at 1.8v, OR buy a level shifter that converts to 1.8v. Or do a nasty hack with resistors that I do not recommend at all.

[coplate]

The "easiest" way - although one of the more exptensive is to buy this.

https://www.amazon.com/Micro1v8-2-Pa...rds=jim.sh+usb

"Jim.sh" had made a board that you could buy in 5v, 3.3v or <floating based on vcc in> configurations, but he has stopped shipping those to amazon.

Then he made this default 1.8v version ( 3.3v with jumper ), but he only sells it in a 2-pack.

Its small enough to leave inside your kindle permanently too. knc1 has a post where he did that, and a few other people.

[Irenicus]

Originally Posted by sibero80

On a side note, would the Serial method work on Firmware 5.9.0.2?

Yes, the JB will work, I also have PW2 with 5.9.2.0.1 on which I did serial JB few days ago, and as you can see in this >post<, even a kindlet version of KUAL working on PW2 5.9.0.2.

I used a FT232RL, which cost just 1,5$(with shipping included from China ) on eBay or Aliexpress, on it you can also select with jumper 5v, 3.3v or <floating based on vcc in> if you remove the jumper completely.

[sibero80]

Originally Posted by Irenicus

Yes, the JB will work, I also have PW2 with 5.9.0.2 on which I did serial JB few days ago, and as you can see in this >post<, even a kindlet version of KUAL working on PW2 5.9.0.2.

I used a FT232RL, which cost just 1,5$(with shipping included from China ) on eBay or Aliexpress, on it you can also select with jumper 5v, 3.3v or <floating based on vcc in> if you remove the jumper completely.

Thank you for your help! That serial adapter is something I can get right now here in my country!

By the way what instructions did you follow? I've found a couple of tutorials, but would be great to replicate your steps to maximize success!

[knc1]

Originally Posted by Irenicus

Yes, the JB will work, I also have PW2 with 5.9.0.2 on which I did serial JB few days ago, and as you can see in this >post<, even a kindlet version of KUAL working on PW2 5.9.0.2.

I used a FT232RL, which cost just 1,5$(with shipping included from China ) on eBay or Aliexpress, on it you can also select with jumper 5v, 3.3v or <floating based on vcc in> if you remove the jumper completely.

Originally Posted by sibero80

Thank you for your help! That serial adapter is something I can get right now here in my country!

By the way what instructions did you follow? I've found a couple of tutorials, but would be great to replicate your steps to maximize success!

Is that "5.9.0.2" a typo?
There has not been an offical release of that version for the PW2.
https://www.amazon.com/gp/help/custo...deId=200203720
(Scroll down to "Paperwhite Generation 6" == PW2 )

Please check again and post any correction.

= = = =

This is the best one we have (applies to all touch screen devices, all firmware versions, just use files matching your device).
** Except the two Oasis models - no serial port access. **
https://www.mobileread.com/forums/sh...d.php?t=267541

[Irenicus]

Originally Posted by sibero80

Thank you for your help! That serial adapter is something I can get right now here in my country!

By the way what instructions did you follow? I've found a couple of tutorials, but would be great to replicate your steps to maximize success!

Here is a clear photo of how it looks(to not get any wrong adapter)


And don't forget to remove the jumper completely(to make it use the same voltage as PW2 output, 1.8v), and also before start, make sure that the battery of PW2 is well charged.

You may also need a driver, which can be found >here<

I have followed instructions that knc1 gave a link above.

Originally Posted by knc1

Is that "5.9.0.2" a typo?
There has not been an offical release of that version for the PW2.
https://www.amazon.com/gp/help/custo...deId=200203720
(Scroll down to "Paperwhite Generation 7" == PW2 )

Please check again and post any correction.

Yes, that was a typo, cause topic starter wrote 5.9.0.2 I was confused and wrote the same I meant 5.9.2.0.1, hope the topic starter also meant that version.

*PW2 == Generation 6*

[sibero80]

Originally Posted by knc1

Is that "5.9.0.2" a typo?
There has not been an offical release of that version for the PW2.

Yes knc1, it was a typo as well, now fixed. I'm on 5.9.2.0.1 too.

Originally Posted by Irenicus

Here is a clear photo of how it looks(to not get any wrong adapter)
Attachment 161793

And don't forget to remove the jumper completely(to make it use the same voltage as PW2 output, 1.8v), and also before start, make sure that the battery of PW2 is well charged.

You may also need a driver, which can be found >here<

I have followed instructions that knc1 gave a link above.

Thanks everyone for the help!
This is the Ft232rl adapter I bought, seems to match the one Irenicus described.


The adapter should arrive sometime next week, and I'll be trying this serial port >>MOD<< so I can always keep a backdoor available.


I'll be posting updates.

Thank you all!

[knc1]

That is one of our better ones.
You can find the original on this forum.

[02xda2]

Use one of this to get 1.8v

[sibero80]

I'm writing to let you know that now I have a Jailbroken kindle!

The serial mod will have to wait due to the lack of time and the right tools.

But once I get it done, you'll get an update.

Thank you everyone that helped me along the way.