AU915

lora_parameters = {
    'tx_power_level': 2, 
    'signal_bandwidth': 'SF7BW125',
    'spreading_factor': 7,    
    'coding_rate': 5, 
    'sync_word': 0x34, 
    'implicit_header': False,
    'preamble_length': 8,
    'enable_CRC': False,
    'invert_IQ': False,
}

Do you have cfg to AU915, BRAZIL ?