Boron continue blinking blue

My Boron continue blinking blue no possibility to reset (like it’s in listening mode). I’m try to reconnect with my iPhone but after the enroll I receive the error ’ Request failed: not found (404)'
Any Idea to resolve and reconnect the device?

Valentino

Yesterday I’m do a Factory reset but it continue to blink blu

Now I’m try to put in dfu mode blink yellow and flash again the bin file this is the error I receive:

particle flash hybrid-0.8.0-rc.27-boron.bin
Including:
3rdPartySIM.cpp
attempting to flash firmware to your device hybrid-0.8.0-rc.27-boron.bin
Flash device failed: I didn’t recognize that device name or ID, try opening https://api.particle.io/v1/devices?access_token=xxx

so like suggest I go to the browser and copy the link this is, the answer:

“,“name”:“Crichetto10”,“last_app”:null,“last_ip_address”:“XXX”,“last_heard”:“2019-01-06T15:15:08.518Z”,“product_id”:13,“connected”:true,“platform_id”:13,“cellular”:false,“notes”:null,“status”:“normal”,“serial_number”:“XXX”,“iccid”:XXXX”,“last_iccid”:“XXX”,“imei”:“XXX”,“current_build_target”:“0.8.0-rc.27”,“system_firmware_version”:“0.8.0-rc.27”,“pinned_build_target”:“0.8.0-rc.27”,“default_build_target”:“0.8.0-rc.27”}

With the command particle list I receive :
Crichetto10 [xxx] (Boron) is online but If I’m do a ping from console disconnect

Any people can help me to resolve this?
Thanks Valentino