Any way to mount SDCard from serial? (working with partially borked device)

[numericOverflow]

I've got a couple v2 cams that are borked. They partially boot, but then hang. I think the boot loader is messed up. I wanted to try just re-flashing the bootloader from a serial console connection I have (via unpopulated serial header) using these commands.

wyzecam_v2_startup_logs_compared_2024-03-29.html.zip

The problem is that the cams don't boot enough into an environment that has the typical SD card mappings, and don't know what device is the SD card.

Can anyone suggest where to get the SDcard so I can mount it?

I can access the root file system, but don't know where the SD card is located to mount it:

[root@Ingenic-uc1_1:~]#
[root@Ingenic-uc1_1:~]#
[root@Ingenic-uc1_1:~]# ls /
backupa   bin       driver    linuxrc   opt       root      sys       tmp
backupd   configs   etc       media     params    run       system    usr
backupk   dev       lib       mnt       proc      sbin      thirdlib  var
[root@Ingenic-uc1_1:~]# ls /dev
console             mtd1ro              ptyp0               rmem
cpu_dma_latency     mtd2                ptyp1               root
dsp                 mtd2ro              ptyp2               shm
full                mtd3                ptyp3               sinfo
input               mtd3ro              ptyp4               soc_vpu
ipu                 mtd4                ptyp5               tty
jz_adc_aux_0        mtd4ro              ptyp6               ttyS1
jz_adc_aux_1        mtd5                ptyp7               ttyp0
jz_adc_aux_2        mtd5ro              ptyp8               ttyp1
jz_adc_aux_3        mtd6                ptyp9               ttyp2
jz_adc_aux_4        mtd6ro              ptypa               ttyp3
jz_adc_aux_5        mtd7                ptypb               ttyp4
jz_adc_aux_6        mtd7ro              ptypc               ttyp5
jz_adc_aux_7        mtd8                ptypd               ttyp6
kmem                mtd8ro              ptype               ttyp7
kmsg                mtd9                ptypf               ttyp8
log_main            mtd9ro              pwm                 ttyp9
loop-control        mtdblock0           ram0                ttypa
loop0               mtdblock1           ram1                ttypb
loop1               mtdblock10          ram10               ttypc
loop2               mtdblock2           ram11               ttypd
loop3               mtdblock3           ram12               ttype
loop4               mtdblock4           ram13               ttypf
loop5               mtdblock5           ram14               uhid
loop6               mtdblock6           ram15               urandom
loop7               mtdblock7           ram2                v4l-subdev0
media0              mtdblock8           ram3                video0
mem                 mtdblock9           ram4                video1
motor               net                 ram5                video2
mtd0                network_latency     ram6                watchdog
mtd0ro              network_throughput  ram7                watchdog0
mtd1                null                ram8                zero
mtd10               ptmx                ram9                zram0
mtd10ro             pts                 random              zram1
[root@Ingenic-uc1_1:~]#

cacert.pem           localsdk_shellcall   sdcard
hualaiclient.domain  resolv.conf
[root@Ingenic-uc1_1:~]# mount /dev/mmcblk0p2 /tmp/sdcard/
mount: mounting /dev/mmcblk0p2 on /tmp/sdcard/ failed: No such file or directory

[ens4dz]

try to connect device to wifi then download file to /tmp or /etc
also, test your sdcard on pc, and confirm if it formated to fat32 not ntfs