We are using bsom modules for our IOT product and all the bsom modules comes out of the box with device OS version 1.4.2
Currently we need to update to the latest devices OS which is 4.0 using DFU mode . Which we have to do one at a time ,so that we thought of automate using a script if we were able to flash it in serial mode.
Is there any way to update the Particle device OS using serial (listening mode) instead of DFU mode ?
I tried to flash using ;
Particle flash --serial firstname.lastname@example.org
It seems like the binary file is flashing to the device ,but the module is still in the same device OS version which is 1.4.2.
Appreciate if someone can help with it .