avrdude urclock_res_check() error:

[briansbrian]

**` Using Port : /dev/ttyCH341USB0 Using Programmer : urclock Overriding Baud Rate : 115200 AVR Part : ATmega328PB Chip Erase delay : 10500 us PAGEL : PD7 BS2 : PC2 RESET disposition : possible i/o RETRY pulse : SCK Serial program mode : yes Parallel program mode : yes Timeout : 200 StabDelay : 100 CmdexeDelay : 25 SyncLoops : 32 PollIndex : 3 PollValue : 0x53 Memory Detail :

                                       Block Poll               Page                       Polled
       Memory Type Alias    Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
       ----------- -------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
       eeprom                 65    20     4    0 no       1024    4      0  3600  3600 0x00 0x00
       flash                  65    10   128    0 yes     32768  128    256  4500  4500 0x00 0x00
       lfuse                   0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
       hfuse                   0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
       efuse                   0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
       lock                    0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
       signature               0     0     0    0 no          3    1      0     0     0 0x00 0x00
       calibration             0     0     0    0 no          1    1      0     0     0 0x00 0x00

     Programmer Type : Urclock
     Description     : Urclock programmer for urboot bootloaders using urprotocol
     Bootloader using STK500v1 communication protocol

avrdude urclock_res_check() error: protocol expects sync byte 0x14 but got 0x00 in urclock_program_enable() avrdude main() error: initialization failed, rc=-1 - double check the connections and try again - use -B to set lower the bit clock frequency, e.g. -B 125kHz - use -F to override this check avrdude urclock_disable() error: protocol expects sync byte 0x14 but got 0x10

avrdude done. Thank you.

the selected serial port does not exist or your board is not connected** `