Don't.

ssh into the camera and check iwconfig for "Link Quality".

There are two factors that can affect SD card detection during the boot sequence.

One is that the GPIO pins for powering the SD card slot and detecting the presence of a card are not set. You can fix this by setting these pins in the environment. You need to set at least the gpio_mmc_power and gpio_mmc_cd pins.

Another factor is that not every card is detected correctly. You can try different cards (different class, size, etc) to find the one that works.

This is most likely an extension of the above problem. If your camera cannot detect the SD card during boot, then none of these files can be accessed and processed by U-Boot.

Interrupt the boot process with Ctrl-C and get into the boot shell. Once in the shell, set the GPIO pin to power up MMC bus, and reinsert the card. Make sure it is recognized correctly and you can access the files

gpio clear 48;
mmc rescan;
mmcinfo;
fatls mmc 0;

then install the firmware as follows

setenv baseaddr 0x82000000;
setenv flashsize 0x1000000;
mw.b ${baseaddr} 0xff ${flashsize};
fatload mmc 0:1 ${baseaddr} autoupdate-full.bin;
sf probe 0; sf erase 0x0 ${flashsize};
sf write ${baseaddr} 0x0 ${filesize};
reset

You will still need to set the correct environment for your hardware. Interrupt the boot process once again, set the GPIO pin for MMC, check the card is recognized

gpio clear 48;
mmc rescan;
mmcinfo;
fatls mmc 0;

and import the environment settings from the file on the card

fatload mmc 0 ${baseaddr} uEnv.txt;
env import -t ${baseaddr} ${filesize};
saveenv;
reset

Alternatively, import the enviroment settings from within Lunux:

sed 's/=/ /' /mnt/mmcblk0p1/uEnv.txt > env.txt;
fw_setenv -s env.txt

Failsafe mode provides a safety net for systems that may encounter issues during the normal boot process. Accessible exclusively via UART console, this mode allows users to intervene manually before the system completes its regular startup sequence.

To enter failsafe mode, users must connect to the device through a UART interface. During the initial stages of boot, a prompt appears on the console:

Press the [f] key to enter failsafe mode

By pressing 'f' within this window, the boot process is halted, and the user is granted access to a minimal emergency shell. This shell can be used to perform troubleshooting tasks, modify system configurations, or recover from errors that prevent the system from booting correctly. If the failsafe mode is not invoked within the given timeframe, the system proceeds to boot normally. This feature is crucial for enabling system accessibility during scenarios where the system may not be operating properly during a normal boot.

thingino-diag

Upload diagnostics to the server (stored for 1 week):

thingino-diag -u

Upload and get a JSON response with the link:

thingino-diag -j

Force upload without the confirmation prompt:

thingino-diag -f -u

Uploaded diagnostics are sent to tb.thingino.com and stored for 1 week. The log may contain sensitive information — please review it before sharing.

You need to stop prudynt as a daemon and run it in foreground in console. Logging will go directly to the console. Level of logging is set in /etc/prudynt.cfg.
Look for the loglevel line. Valid options can be found on here: https://github.com/gtxaspec/prudynt-t/raw/master/prudynt.cfg.example