Since upgrading from 3.3.004-20 I've noticed my modules frequently are not connected to the cell network: OVMS# cell MODEM Status Model: SIM7600 Network Registration: Searching Provider: AT&T Hologram Signal: -105 dBm Mode: LTE,Online State: NetWait Mux: Status up PPP: Not connected Last Error: User Interrupt GPS: Connected on channel: #1 As before, power cycling is a short term fix. While I was looking into this I noticed that both of my production modules had crash counters=1 with stack traces. One looks like an abort() from esp_sha_read_digest_state(). The car for the first crash hasn't moved in more than a week. I drove the 2nd car yesterday (and had to power cycle the ovms module while I was out because I noticed it wasn't connected to the cell network so the module had less than 24 hours of uptime on it when it crashed). Craig ice 1470 % ./backtrace.sh 0x400891bf 0x40089459 0x4026f861 0x4024b93a 0x40244182 0x402470d7 0x4025650b 0x402473a6 0x402473d1 0x4012bd0c 0x4012d3bc 0x4012eb09 0x4012f02f 0x4012b516 0x4011f40b 0x4011f4a9 + xtensa-esp32-elf-addr2line -e build/ovms3.elf 0x400891bf 0x40089459 0x4026f861 0x4024b93a 0x40244182 0x402470d7 0x4025650b 0x402473a6 0x402473d1 0x4012bd0c 0x4012d3bc 0x4012eb09 0x4012f02f 0x4012b516 0x4011f40b 0x4011f4a9 /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/esp32/panic.c:736 /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/esp32/panic.c:736 /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/esp32/hwcrypto/sha.c:272 /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/mbedtls/port/esp_sha256.c:349 /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/mbedtls/mbedtls/library/ssl_tls.c:7649 /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/mbedtls/mbedtls/library/ssl_tls.c:7649 /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/mbedtls/mbedtls/library/ssl_cli.c:3894 /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/mbedtls/mbedtls/library/ssl_tls.c:7649 /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/mbedtls/mbedtls/library/ssl_tls.c:7649 components/mongoose/mongoose/mongoose.c:1701 components/mongoose/mongoose/mongoose.c:1701 components/mongoose/mongoose/mongoose.c:1701 components/mongoose/mongoose/mongoose.c:1701 components/mongoose/mongoose/mongoose.c:1701 main/ovms_netmanager.cpp:1203 main/ovms_netmanager.cpp:1203 ice 1471 % ./backtrace.sh 0x400f5950 0x4023fc12 0x40122463 0x401223fa 0x40114f35 0x401150f6 0x401151d0 0x4011524d + xtensa-esp32-elf-addr2line -e build/ovms3.elf 0x400f5950 0x4023fc12 0x40122463 0x401223fa 0x40114f35 0x401150f6 0x401151d0 0x4011524d /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/lwip/lwip/src/core/timeouts.c:381 /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/lwip/lwip/src/apps/sntp/sntp.c:693 main/ovms_time.cpp:104 main/ovms_time.cpp:104 /usr/local/xtensa-esp32-elf/xtensa-esp32-elf/include/c++/5.2.0/functional:2271 main/ovms_events.cpp:310 (discriminator 2) main/ovms_events.cpp:262 main/ovms_events.cpp:89