Background: I’ve been working with the SAMW25H18-MR210PB module and I’ve hit a wall. Hoping someone has some insight into what might be wrong. I got it to connect to our WPA2 WIFI network and download the OTA firmware update, so now the WINC is running the latest firmware version, 19.4.4. My ASF WINC driver version is 19.3.0, ASF version 3.31. According to the version checks in the ASF, this combination should be acceptable.
Problem: After updating the WINC’s firmware, it will no longer to connect to my WPA-2 WIFI network; the same network it previously connected to in order to perform the OTA update. Atmel’s sample project(s) also will not connect. The WINC either returns (via wifi call-back) M2M_ERR_AUTH_FAIL, or it just gets stuck (returns nothing and becomes unresponsive). Access Point mode appears to work – I’m able to connect to the WINC with my smart phone. The WINC will also connect to an open (unsecured) access point. But connecting to a secure access point just doesn’t work at all. Note that no certificate update was done, although I don’t think those certs have anything to do with WPA-2 authentication.
Any suggestions where I might look? What might be wrong? Is there something new/changed that maybe I'm not doing or doing wrong?
Regarding the firmware: Anyone know what’s the difference between m2m_ota_2b0.bin and m2m_ota_3a0.bin, and how would I know which one to use?
I used m2m_ota_2b0.bin. One document I found leads me to think that maybe I should have used 3a0, but how would I know?