MR18 on firmware 27.9

Hi All, anyone tried flashing one of these im a little stuck as i cannot get to the console window uart isnt working and i cant do jtag flashing as i cant get to the serial connection.

any pointers?

The serial connection is useful as a monitor but it is not essential.
The use of JTAG is independent of serial connection.

Ah wonderful. Now to get JTAG working on my raspberry pi and flash it in.

so i encounter this when using jtag on a raspberry pi

Info : BCM2835 GPIO JTAG/SWD bitbang driver
Info : clock speed 1001 kHz
Error: JTAG scan chain interrogation failed: all zeroes
Error: Check JTAG interface, timings, target power, etc.
Error: Trying to use configured scan chain anyway...
Error: ar9344.cpu: IR capture error; saw 0x00 not 0x01
Warn : Bypassing JTAG setup events due to errors
Info : starting gdb server for ar9344.cpu on 3333
Info : Listening on port 3333 for gdb connections
Error: Failed to enter Debug Mode!
Info : Halt timed out, wake up GDB.
Error: timed out while waiting for target halted

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