Quote:
Originally Posted by Hexadecimal
Hmm... Thanks! That worth a retry.
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Most likely, you have Tx, Rx reversed.
Use:
Tx -> Rx
Rx <- Tx
Be certain you are using the correct interface voltage (1.8v lvttl).
Check that the serial port configuration is set properly:
115200,8,N,1
If it does not work, you have done something wrong.
It can not 'go bad' without physical damage to the SoC or the motherboard.
Ref:
https://www.mobileread.com/forums/sh...d.php?t=267541
Part 3, Step 3
Read all parts, all steps, even if you are not using Windows, there is a lot of information in that thread you will find useful.
Note:
All touchscreen devices are the same, with two exceptions:
The physical location of the serial port (the pin-out pattern is the same on all) ;
The name of the update file used ;
Tell us what PC, OS, and Terminal emulator program you are using.
It is difficult to provide help in a vacuum of context.
Unless you start typing things that we do not tell you to type,
your diags system is safe from harm.
Only you can screw it up.