Accessing advanced service menu using UART

[leimeisei]

Hey all,

I have a Mac and a USB->serial cable, and I wasn't much interested in buying a Factory remote so I decided to try to access the menu by sending the factory remote codes over ExLink.

First, you'll need to set your RS232 mode to UART and enable UART in the service menu. Follow the instructions (using the regular old service menu):
viewtopic.php?f=85&t=10242

If you're using a Mac like me, you can open a connection using the screen command:

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sudo screen /dev/tty.usbserial 9600 8N1

(note that it's 9600 baud instead of the usual 115200 for Debug console)

If you're not finding any usb serial devices in /dev/tty.*, then you probably need to install the driver. Most of them use the same one but you can verify in "About This Mac" > "System Config". If it says Prolific, congrats your job is easy http://www.prolific.com.tw/US/ShowProdu ... 29&pcid=41

After you've verified the device is connected successfully, exit screen, and use this command to set default tty output:
stty -f /dev/tty.usbserial raw speed 9600

You are now finally ready to send commands. Use the following:
(send the INFO key)

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printf '%b' '\x08\x22\x0d\x00\x00\x1F\xAA' > /dev/tty.usbserial 

(then send the FACTORY key)

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printf '%b' '\x08\x22\x0d\x00\x00\x3B\x8E' > /dev/tty.usbserial 

You will have to do these in some relatively fast succession or it won't work.

Let me know if this works as well for you as it did for me