I have an Electron SARA-U620 that seems in a “bricked” state of some sort. I can get it into DFU mode, but no amount of flashing new firmware or using the cli command “particle device doctor” will get it to work. I have tried different app and device os of all combinations and still nothing. Whenever it boots all it does it immediately go to flashing green.
Any ideas? Thanks in advance.
I can't see anything wrong with that - it should go into flashing green immediately.
However after a while (up to 5 minutes) it should transition to other color codes. It would be good if you could state what happens after flashing green or how long it kept flashing green.
Also have you checked the SIM is correctly working and activated?
Sorry. Yes, it never exits green. I have wait up to 4 hours. I also brought it to a different location in case there was a cell issue. I worked briefly with David Middleton on this, but I don’t want to take any more of his time so I have turned to the forum. I actually just unclaimed and released the sim and reattempted setup, but of course, since it cannot get to breathing cyan, it never actually finishes the setup.
Basic checks:
Right now the only thing connected to the particle is the usb, a battery, and the antenna.
Everything is properly connected as far as I can tell.
I cannot get it into safe mode, since I cannot get it to connect to cellular network.
Doesn’t seem to matter the SIM, still just does same thing.
Output from debugging app:
C:\flas\PeterMod151>particle flash --usb firmware.bin
Flash success!
C:\flas\PeterMod151>particle serial monitor
Opening serial monitor for com port: "COM3"
Serial monitor opened successfully:
starting tests…
turning cellular on…
deviceID=
manufacturer=u-blox
model=SARA-U260
firmware version=23.20
ordering code=SARA-U260-00S-01
IMEI=354421079021028
IMSI=u-blox
ICCID=
0000022100 [app] INFO: enabling trace logging
attempting to connect to the cellular network…
0000022100 [system] INFO: Sim Ready
0000022100 [system] INFO: Sim Ready
0000022101 [system] INFO: ARM_WLAN_WD 1
0000022101 [system] INFO: ARM_WLAN_WD 1
[ Modem::init ] = = = = = = = = = = = = = = =
22.101 AT send 9 "AT+CGSN\r\n"
22.122 AT read UNK 19 "\r\r\n"
22.132 AT read OK 6 "\r\nOK\r\n"
22.132 AT send 9 "AT+CGMI\r\n"
22.142 AT read UNK 10 "\r\nu-blox\r\n"
22.152 AT read OK 6 "\r\nOK\r\n"
22.152 AT send 9 "AT+CGMM\r\n"
22.162 AT read UNK 13 "\r\nSARA-U260\r\n"
22.172 AT read OK 6 "\r\nOK\r\n"
22.172 AT send 9 "AT+CGMR\r\n"
22.182 AT read UNK 9 "\r\n23.20\r\n"
22.192 AT read OK 6 "\r\nOK\r\n"
22.192 AT send 9 "AT+CCID\r\n"
22.202 AT read + 30 "\r\n+CCID: \r\n"
22.213 AT read OK 6 "\r\nOK\r\n"
22.213 AT send 11 "AT+UPSV=1\r\n"
22.223 AT read OK 6 "\r\nOK\r\n"
22.223 AT send 11 "AT+CMGF=1\r\n"
22.233 AT read OK 6 "\r\nOK\r\n"
22.233 AT send 13 "AT+CNMI=2,1\r\n"
22.243 AT read OK 6 "\r\nOK\r\n"
22.243 AT send 9 "AT+CIMI\r\n"
22.253 AT read UNK 19 "\r\n\r\n"
22.263 AT read OK 6 “\r\nOK\r\n”
[ Modem::register ] = = = = = = = = = = = = = =
22.263 AT send 10 "AT+CREG?\r\n"
22.274 AT read + 14 "\r\n+CREG: 2,2\r\n"
22.284 AT read OK 6 "\r\nOK\r\n"
22.284 AT send 11 "AT+CGREG?\r\n"
22.294 AT read + 15 "\r\n+CGREG: 2,2\r\n"
22.304 AT read OK 6 "\r\nOK\r\n"
22.304 AT send 12 "AT+CGREG=2\r\n"
22.314 AT read OK 6 "\r\nOK\r\n"
22.314 AT send 11 "AT+CREG=2\r\n"
22.324 AT read OK 6 "\r\nOK\r\n"
22.324 AT send 10 "AT+CREG?\r\n"
22.334 AT read + 14 "\r\n+CREG: 2,2\r\n"
22.344 AT read OK 6 "\r\nOK\r\n"
22.344 AT send 11 "AT+CGREG?\r\n"
22.354 AT read + 15 "\r\n+CGREG: 2,2\r\n"
22.364 AT read OK 6 "\r\nOK\r\n"
37.364 AT send 10 "AT+CREG?\r\n"
39.164 AT read + 14 "\r\n+CREG: 2,2\r\n"
39.174 AT read OK 6 "\r\nOK\r\n"
39.174 AT send 11 "AT+CGREG?\r\n"
39.184 AT read + 15 "\r\n+CGREG: 2,2\r\n"
39.194 AT read OK 6 "\r\nOK\r\n"
54.194 AT send 10 "AT+CREG?\r\n"
55.994 AT read + 14 "\r\n+CREG: 2,2\r\n"
56.004 AT read OK 6 "\r\nOK\r\n"
56.004 AT send 11 "AT+CGREG?\r\n"
56.014 AT read + 15 "\r\n+CGREG: 2,2\r\n"
56.024 AT read OK 6 "\r\nOK\r\n"
71.024 AT send 10 "AT+CREG?\r\n"
72.824 AT read + 14 "\r\n+CREG: 2,2\r\n"
72.834 AT read OK 6 "\r\nOK\r\n"
72.834 AT send 11 "AT+CGREG?\r\n"
72.844 AT read + 15 "\r\n+CGREG: 2,2\r\n"
72.854 AT read OK 6 "\r\nOK\r\n"
87.854 AT send 10 "AT+CREG?\r\n"
87.854 AT read + 12 "\r\n+CREG: 0\r\n"
87.865 AT read + 13 "\r\n+CGREG: 0\r\n"
87.875 AT read + 12 "\r\n+CREG: 2\r\n"
87.885 AT read + 13 "\r\n+CGREG: 2\r\n"
87.895 AT read + 12 "\r\n+CREG: 0\r\n"
87.905 AT read + 13 "\r\n+CGREG: 0\r\n"
87.915 AT read + 12 "\r\n+CREG: 2\r\n"
87.925 AT read + 13 "\r\n+CGREG: 2\r\n"
87.935 AT read + 12 "\r\n+CREG: 0\r\n"
87.945 AT read + 13 "\r\n+CGREG: 0\r\n"
88.095 AT read + 14 "\r\n+CREG: 2,0\r\n"
88.105 AT read OK 6 "\r\nOK\r\n"
88.105 AT send 11 "AT+CGREG?\r\n"
88.115 AT read + 15 "\r\n+CGREG: 2,0\r\n"
88.125 AT read OK 6 “\r\nOK\r\n”
Just continues to write that message over and over : XX.XXX AT read + …
I will try to post a video in a second.
That’s showing no compatible towers, which means:
Your SIM card is activated, so that’s not it, and U260 is the correct Electron model for your area.
You should follow the instructions for the Carrier Scan option for the Electron Cloud debug. That will show all compatible towers which will help narrow down the remaining possibilities.
The electron cloud debug never actually gets to a point where I can “use” it. It just repeats the logs that I posted above. I see the message about : a - enter APN for 3rd-party SIM card
k - set keep-alive value
c - show carriers at this location
t - run normal tests (occurs automatically after 10 seconds)
But I cannot actually select any of them.
I have tried running the particle.exe from both CMD and Powershell both running as Admin (Windows 10 Pro version 1803)