BG5DNQ The latest 126H firmware from losehu The options within the settings cannot be directly modified. There is also no option to specify a frequency and DTMF ID in k5web.
BG4JBQ BG5DNQ After selecting option M, you can directly modify the ID by using the up and down buttons.
moxnet After flashing, I continued to use the official QuanSheng firmware modification software (I did this and it worked successfully, but I'm not sure if there are any potential risks).