BTM-182 higher baud rate UART

Hi,

datasheet for BTM-182 shows commands to set baud rate. Max baud rate shown is 921600 with “ATL8” command. Does anybody know how to set the baud rate higher than this if at all possible?? It says on the webpage the bluetooth module is capable of up to 3Mbps, so how to communicate with it at this speed??

Thanks for any info you have