Hi all, 8.8.8.8 is Google. Maybe in this case not that important, but if you are interested in more privacy on the net you can search for "8.8.8.8 alternative privacy" and you'll get other options. Regards Chris   Am Montag, dem 29.12.2025 um 07:49 +0800 schrieb Mark Webb-Johnson via OvmsDev:

Aaron,

I see that you don’t have DNS configured. Best to set that as 8.8.8.8 to avoid issues with switching between wifi and cellular dns providers.

Please also check to ensure that you don’t have any custom scripts configured.

Regards, Mark.

...

On 28 Dec 2025, at 12:24 AM, Aaron Carson <aaron@aaroncarson.co.uk> wrote:

Hi both,

Thanks very much for getting back to me so quickly!

I have now tried turning off TLS/SSL - and unfortunately it crashed immediately upon hitting start server.

Module summary is below. If anything obviously wrong sticks out, I’d be very appreciative if you could spare the time to check and let me know.

I’ll catch the USB logs as soon as I can - same with a NONE vehicle, haven’t tried any of that yet. It might well be that any issues make themselves obvious at that point! 

Thanks again - really excited for the potential of OVMS!

Aaron

———

OVMS MODULE SUMMARY

Module   Version:  3.3.005-536-g20a42926/ota_1/edge (build idf v3.3.4-851- gfa4f07fb3b Dec 25 2025 16:43:35)   Hardware: OVMS WIFI BLE BT cores=2 rev=ESP32/3; MODEM SIM7600   Free RAM: 8bit=57212-58652 32bit=12128 SPIRAM=3225048-3244984 bytes   12V:      11.9V

Storage   /store:  Size:    976 kB  Avail:    896 kB  Used:   9%    WIFI Status   Power: on   Mode: Access-Point + Client mode      STA SSID: **redacted** (-78.2 dBm) [fixed]     MAC: 00:4b:12:...     IP: 10.75.0.247/255.255.0.0     GW: 10.75.0.1     AP: ba:fb:e4:c4:1b:6f      AP SSID: **redacted** (20 MHz, channel 6)     MAC: 00:4b:12:...     IP: 192.168.4.1     AP Stations: 0    MODEM Status   Model: SIM7600   Revision:    Network Registration: Unknown     Provider:      Signal: 0 dBm     Mode:    State: PoweredOn     Ticker: 0     User Data: 0   UART:     FIFO overflows: 0     Buffer overflows: 0     Parity errors: 0     Frame errors: 0     Driver Buffer overflows: 0     State Timeout Goto: PoweringOn (in 40 seconds)   Mux: Not running   PPP: Not running   GPS: Not running

Configuration   [auto]     dbc: no     egpio: no     ext12v: no     init: yes     modem: yes     obd2ecu:      ota: yes     scripting: yes     server.v2: no     server.v3: no     vehicle.type: SQ     wifi.mode: apclient     wifi.ssid.ap: **redacted**     wifi.ssid.client: **redacted**   [can]   [dbc]   [egpio]     monitor.ports:    [http.plugin]   [http.server]   [locations]     Home: **redacted**   [log]   [modem]     apn: hologram     apn.password:      apn.user:      enable.gps: yes     enable.gpstime: yes     enable.net: yes     enable.sms: yes     gps.parkpause: 600     gps.parkreactawake: yes     gps.parkreactivate: 50     gps.parkreactlock: 5     net.type: auto     pincode:    [module]     cfgversion: 2022121400     init: done   [network]     dns:      modem.sq.bad: -103     modem.sq.good: -93     type: 4G     wifi.ap2client.enable: yes     wifi.sq.bad: -95   [notify]   [obd2ecu]   [obd2ecu.map]   [ota]     auto.allow.modem: no     auto.hour: 2     http.mru: https://ovms.dexters- web.de/firmware/ota/v3.3/edge/ovms3.bin     server: https://ovms.dexters-web.de/firmware/ota     tag: edge   [password]     module: **redacted**     pin: **redacted**     server.v2: **redacted**     server.v3: **redacted**   [plugin]   [plugin.disabled]   [plugin.enabled]   [plugin.repos]   [power]   [pushover]   [sdcard]     maxfreq.khz: 20000   [server.v2]     port:      server: ovms.dexters-web.de     tls: no     updatetime.connected:      updatetime.idle:      workaround.ios_tpms_display: no   [server.v3]     events.legacy_topic: yes     metrics.exclude:      metrics.exclude.immediately:      metrics.include:      metrics.include.immediately:      metrics.priority:      port: 8883     queue.modified:      queue.sendall:      server: ovms.dexters-web.de     tls: yes     topic.prefix:      updatetime.awake:      updatetime.charging:      updatetime.connected:      updatetime.idle:      updatetime.immediately: no     updatetime.keepalive: 1740     updatetime.on:      updatetime.priority: no     updatetime.sendall:      user: **redacted**   [ssh.info]     fingerprint: wNr7F8DCIPXn12my8kyX3W/E9Zl9CqeiMf/eYRjWdn8   [ssh.keys]   [ssh.server]     key: **redacted**   [system.adc]     factor12v: 195.7   [tpms]   [usr]   [vehicle]     12v.alert: 0.8     12v.ref:      12v.shutdown:      12v.shutdown_delay:      12v.wakeup:      12v.wakeup_interval:      flatbed.alarmdistance:      flatbed.alarminterval:      id: **redacted**     name: Momo     stream: 10     timezone: GMT0BST,M3.5.0/1,M10.5.0     timezone_region: Europe/London     tpms.fl: 0     tpms.fr: 1     tpms.rl: 2     tpms.rr: 3     units.accel: miphps     units.accelshort: ftpss     units.consumption: mipkwh     units.distance: M     units.distanceshort: feet     units.speed: miph     valet.alarmdistance:      valet.alarminterval:    [wifi.ap]     **redacted**: **redacted**   [wifi.ssid]     **redacted**: **redacted**   [xsq]     12v.charge: yes     bcvalue: no     canwrite: yes     cfg.preset.ver: 7     extended.stats: yes     full.km: 126     led: no     modem.check: no     rebootnw: 0     reset.notify: yes     resettotal: no     resettrip: no     tpms.alert.enable: yes     tpms.front.pressure: 225     tpms.rear.pressure: 255     tpms.value.alert: 50     tpms.value.warn: 30     unlock.warning: yes

REPORT ENDS

...

On 27 Dec 2025, at 14:50, Michael Balzer via OvmsDev <ovmsdev@lists.openvehicles.com> wrote:

 Welcome, Aaron.

Sorry, no idea about the crash, the V2 client is normally very stable and tolerates all kinds of misconfigurations.

Please catch the USB console log during a crash, which will likely show crash details. We try to carry crash details over the reboot in SRAM, but that doesn't work under all circumstances.

Check the log for any warnings or error indicators. Possibly try log level debug or verbose to see more details.

Also, do you actually need the car connection to reproduce the crash, and does it only occur with the SQ vehicle, or does it also happen with e.g. the NONE vehicle on your desk?

Regards, Michael

Am 27.12.25 um 14:33 schrieb Aaron Carson via OvmsDev:

...

Hi folks,

Hope you’re all keeping well and that your holidays have been lovely so far! 

I’ve been watching the OVMS project for just over a year since Mercedes announced they were going to shut down the Smart EQ servers (UK 453 Brabus). Then, we got my mum a module for Christmas so finally getting to play with it properly 😄 

However, I’m having some trouble with the V2 server. I’m using Dexter’s cloud server for now (thank you for hosting it!) with the aim to set Mum up with the Quarz iOS app (https://apps.apple.com/gb/app/quarz/id6740280553). 

If I start V2 on the module, it either crashes instantly or does so within a few minutes. If I enable autostart on it, it boot loops for a minute and then needs a manual reboot. Not so bad in the summer but having to go back outside to the car in 1°C weather isn’t my idea of fun 😂 

Problem is: when it crashes, there’s no crash data.

Last crash: IllegalInstruction exception on core 0

Registers:

PC : 0x00000000

PS : 0x00000000

A0 : 0x00000000

A1 : 0x00000000

A2 : 0x00000000

A3 : 0x00000000

A4 : 0x00000000

A5 : 0x00000000

A6 : 0x00000000

A7 : 0x00000000

A8 : 0x00000000

A9 : 0x00000000

A10 : 0x00000000

A11 : 0x00000000

A12 : 0x00000000

A13 : 0x00000000

A14 : 0x00000000

A15 : 0x00000000

SAR : 0x00000000

EXCCAUSE: 0x00000000

EXCVADDR: 0x00000000

LBEG : 0x00000000

LEND : 0x00000000

LCOUNT : 0x00000000

Backtrace: 

Version: 3.3.005-536-g20a42926/ota_1/edge (build idf v3.3.4- 851-gfa4f07fb3b Dec 25 2025 16:43:35)

Hardware: OVMS WIFI BLE BT cores=2 rev=ESP32/3; MODEM SIM7600

Despite all this, I’m having no such issues with V3/MQTT. I’m happy to use that - and I intend to integrate it with Home Assistant so probably would aim for that in general, but the data usage is *so* much lower on V2 - and with a Hologram SIM, that’s pretty important - that I’d have preferred to go down that path.

Any ideas as to why it could be crashing?

Best wishes and kind regards,

Aaron

Aaron Carson (he/him) ✉️ : aaron@aaroncarson.co.uk 💻 : aaroncarson.co.uk [1] 🔑 : 715E 0332 F7E1 E0F1 [2]

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[1] aaroncarson.co.uk https://www.aaroncarson.co.uk/ [2] 715E 0332 F7E1 E0F1 https://keys.openpgp.org/vks/v1/by-fingerprint/45982EB56486CED008DAED0D715E0...