EM7511 not connected to any network

but i dont have any -p flag /dev/cdc-wdm0

ls: cannot access ‘/dev/cdc-wdm*’: No such file or directory

how about doing the fw upgrade command without -p flag

fwdwl-litearm -d /dev/ttyUSB0 -t 1 --fwpath “./” --cwe SWI9X50C_01.14.02.00.cwe --nvu SWI9X50C_01.14.02.00_GENERIC_002.035_000.nvu
bash: fwdwl-litearm: command not found

did you download the SDK?

e.g.
\MBPL_SDK_R20_ENG4-lite.bin.tar\MBPL_SDK_R20_ENG4-lite.bin\SampleApps\lite-fw-download\bin

yes download the MBPL_SDK_R20_ENG4

then you should be able to run ./fwdwl-litearm