Attempted serial jailbreak but the diagnostic menu is different?!

cryptocoryne · 01-13-2018, 12:58 PM

I hooked up my KT2 (serial begins 90C6, firmware ver. 5.8.9.2) using a USB serial and I can get to the uboot> prompt.
I enter

Code:

bootm 0xE41000

, some text scrolls by and nothing happens after that.

So I started pressing buttons. Entering a ? gives the text output below.

Entering d, l, m, o just gives the same error.

Code:

    BOURBON_WFO_PREEVT2 - System Diags -  82
   ~~~~  1.16.614.246981  ~~~~ 
     pcbId:0620601144260BGF
(DS INFO)-Device Setting  
(OTS)-Operator test suite     
(o)-Misc individual diagnostics     
(WIFI NART)-nART factory test     
(USB EXPORT)-USB device mode     
(NEONODE DRAW)-Touch Draw test     
(o)-Reboot or Disable Diags     
(POWER SUSPEND)-Lock screen     
(X)-Exit
     

m
get_input_from_stdin Received [M]
        TCP_IP_Server_Handler:exe pass in null menu item!
d
get_input_from_stdin Received [D]
        TCP_IP_Server_Handler:exe pass in null menu item!

cryptocoryne · 01-13-2018, 02:04 PM

Nevermind. I was using the kindle face down and only looking at my serial terminal. (Since there was some delicate soldering on the back, I was reluctant to move it around.) Flipping it over, I found a menu which allowed me to quit the diagnostics and get to the login prompt.

Everything else wen pretty much according to the guide; got rid of the root password, ran the jb.sh script, and KUAL works!

btw, I used a sparkfun-branded 3V3 FDTI USB serial converter with a Sparkfun bidirectional level shifter. (I got the 1.8V for the low side of the shifter from an Adafruit adjustable breadboard power supply.) I'm not a huge fanboy of Sparkfun, just had this stuff already and wanted to make use of what I already had.

01-13-2018, 12:58 PM	#1
cryptocoryne Member Posts: 19 Karma: 10 Join Date: Jul 2014 Location: stupidville, Florida Device: DXG (B009), K4 (9023), PW1 (B024), KT2 (90C6)	Attempted serial jailbreak but the diagnostic menu is different?! I hooked up my KT2 (serial begins 90C6, firmware ver. 5.8.9.2) using a USB serial and I can get to the uboot> prompt. I enter Code: bootm 0xE41000 , some text scrolls by and nothing happens after that. So I started pressing buttons. Entering a ? gives the text output below. Entering d, l, m, o just gives the same error. Code: BOURBON_WFO_PREEVT2 - System Diags - 82 ~~~~ 1.16.614.246981 ~~~~ pcbId:0620601144260BGF (DS INFO)-Device Setting (OTS)-Operator test suite (o)-Misc individual diagnostics (WIFI NART)-nART factory test (USB EXPORT)-USB device mode (NEONODE DRAW)-Touch Draw test (o)-Reboot or Disable Diags (POWER SUSPEND)-Lock screen (X)-Exit m get_input_from_stdin Received [M] TCP_IP_Server_Handler:exe pass in null menu item! d get_input_from_stdin Received [D] TCP_IP_Server_Handler:exe pass in null menu item! Last edited by cryptocoryne; 01-13-2018 at 07:37 PM. Reason: remove typos, better formatting

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01-13-2018, 02:04 PM	#2
cryptocoryne Member Posts: 19 Karma: 10 Join Date: Jul 2014 Location: stupidville, Florida Device: DXG (B009), K4 (9023), PW1 (B024), KT2 (90C6)	Nevermind. I was using the kindle face down and only looking at my serial terminal. (Since there was some delicate soldering on the back, I was reluctant to move it around.) Flipping it over, I found a menu which allowed me to quit the diagnostics and get to the login prompt. Everything else wen pretty much according to the guide; got rid of the root password, ran the jb.sh script, and KUAL works! btw, I used a sparkfun-branded 3V3 FDTI USB serial converter with a Sparkfun bidirectional level shifter. (I got the 1.8V for the low side of the shifter from an Adafruit adjustable breadboard power supply.) I'm not a huge fanboy of Sparkfun, just had this stuff already and wanted to make use of what I already had.

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