Since the web install is failing on this phone, I tried the CLI install in an attempt to troublehsoot.
The result was that I was left back at the Fastboot Mode bootloader, showing device state unlocked, just like when I began.

Thoughts/suggestions?

Terminal contents:
`fastboot version 34.0.4-10411341
Installed as /home/j/platform-tools/fastboot
j@pop-os:~$ echo 0 | sudo tee /sys/bus/usb/drivers_autoprobe
[sudo] password for j:
0
j@pop-os:~$ echo 1 | sudo tee /sys/bus/usb/drivers_autoprobe
1
j@pop-os:~$ fastboot flashing unlock
(bootloader) device already unlocked
OKAY [ 0.037s]
Finished. Total time: 0.037s
j@pop-os:~$ cd lynx-factory-2023101300/
j@pop-os:~/lynx-factory-2023101300$ ./flash-all.sh
Warning: skip copying bootloader_b image avb footer (bootloader_b partition size: 0, bootloader_b image size: 15126280).
Sending 'bootloader_b' (14771 KB) OKAY [ 0.465s]
Writing 'bootloader_b' (bootloader) Flashing pack version lynx-14.0-10529422
(bootloader) flashing platform gs201
(bootloader) Validating partition ufs
(bootloader) Validating partition ufs
(bootloader) Validating partition partition:0
(bootloader) Validating partition partition:1
(bootloader) Validating partition partition:2
(bootloader) Validating partition partition:3
(bootloader) Validating partition bl1_b
(bootloader) Validating partition pbl_b
(bootloader) Validating partition bl2_b
(bootloader) Validating partition abl_b
(bootloader) Validating partition bl31_b
(bootloader) Validating partition tzsw_b
(bootloader) Validating partition gsa_b
(bootloader) Validating partition ldfw_b
(bootloader) Flashing partition ufs
(bootloader) Flashing partition ufs
(bootloader) Flashing partition partition:0
(bootloader) Flashing partition partition:1
(bootloader) Flashing partition partition:2
(bootloader) Flashing partition partition:3
(bootloader) Flashing partition bl1_b
(bootloader) Flashing partition pbl_b
(bootloader) Flashing partition bl2_b
(bootloader) Flashing partition abl_b
(bootloader) Flashing partition bl31_b
(bootloader) Flashing partition tzsw_b
(bootloader) Flashing partition gsa_b
(bootloader) Flashing partition ldfw_b
(bootloader) Loading sideload ufsfwupdate
OKAY [ 0.100s]
Finished. Total time: 0.566s
Setting current slot to 'b' OKAY [ 0.063s]
Finished. Total time: 0.063s
Rebooting into bootloader OKAY [ 0.000s]
Finished. Total time: 0.050s
< waiting for any device >
Warning: skip copying bootloader_a image avb footer (bootloader_a partition size: 0, bootloader_a image size: 15126280).
Sending 'bootloader_a' (14771 KB) OKAY [ 0.457s]
Writing 'bootloader_a' (bootloader) Flashing pack version lynx-14.0-10529422
(bootloader) flashing platform gs201
(bootloader) Validating partition ufs
(bootloader) Validating partition ufs
(bootloader) Validating partition partition:0
(bootloader) Validating partition partition:1
(bootloader) Validating partition partition:2
(bootloader) Validating partition partition:3
(bootloader) Validating partition bl1_a
(bootloader) Validating partition pbl_a
(bootloader) Validating partition bl2_a
(bootloader) Validating partition abl_a
(bootloader) Validating partition bl31_a
(bootloader) Validating partition tzsw_a
(bootloader) Validating partition gsa_a
(bootloader) Validating partition ldfw_a
(bootloader) Flashing partition ufs
(bootloader) Flashing partition ufs
(bootloader) Flashing partition partition:0
(bootloader) Flashing partition partition:1
(bootloader) Flashing partition partition:2
(bootloader) Flashing partition partition:3
(bootloader) Flashing partition bl1_a
(bootloader) Flashing partition pbl_a
(bootloader) Flashing partition bl2_a
(bootloader) Flashing partition abl_a
(bootloader) Flashing partition bl31_a
(bootloader) Flashing partition tzsw_a
(bootloader) Flashing partition gsa_a
(bootloader) Flashing partition ldfw_a
(bootloader) Loading sideload ufsfwupdate
OKAY [ 0.068s]
Finished. Total time: 0.526s
Setting current slot to 'a' OKAY [ 0.067s]
Finished. Total time: 0.068s
Rebooting into bootloader OKAY [ 0.000s]
Finished. Total time: 0.050s
< waiting for any device >
Warning: skip copying radio_a image avb footer (radio_a partition size: 0, radio_a image size: 79974540).
Sending 'radio_a' (78100 KB) OKAY [ 2.405s]
Writing 'radio_a' (bootloader) Flashing pack version g5300q-230626-230818-M-10679446
(bootloader) Flashing partition modem_a
OKAY [ 0.259s]
Finished. Total time: 2.666s
Rebooting into bootloader OKAY [ 0.000s]
Finished. Total time: 0.050s
< waiting for any device >
Erasing 'avb_custom_key' (bootloader) avb custom key: erase done
OKAY [ 0.024s]
Finished. Total time: 0.025s
Warning: skip copying avb_custom_key image avb footer (avb_custom_key partition size: 0, avb_custom_key image size: 1032).
Sending 'avb_custom_key' (1 KB) OKAY [ 0.000s]
Writing 'avb_custom_key' (bootloader) avb custom key: flash done
OKAY [ 0.024s]
Finished. Total time: 0.025s
Rebooting into bootloader OKAY [ 0.000s]
Finished. Total time: 0.050s
< waiting for any device >
OKAY [ 0.005s]
Finished. Total time: 0.005s
Erasing 'fips' OKAY [ 0.002s]
Finished. Total time: 0.003s
Erasing 'dpm_a' OKAY [ 0.002s]
Finished. Total time: 0.003s
Erasing 'dpm_b' OKAY [ 0.003s]
Finished. Total time: 0.003s
Snapshot cancel OKAY [ 0.001s]

Finished. Total time: 0.001s

Bootloader Version...: lynx-14.0-10529422
Baseband Version.....: g5300q-230626-230818-B-10679446

Serial Number........: 34141JEHN01888

extracting android-info.txt (0 MB) to RAM...
Checking 'product' OKAY [ 0.000s]
Checking 'version-bootloader' OKAY [ 0.000s]
Checking 'version-baseband' OKAY [ 0.000s]
Setting current slot to 'a' OKAY [ 0.057s]
extracting boot.img (64 MB) to disk... took 0.280s
extracting init_boot.img (8 MB) to disk... took 0.028s
extracting dtbo.img (16 MB) to disk... took 0.047s
archive does not contain 'dt.img'
extracting pvmfw.img (1 MB) to disk... took 0.004s
archive does not contain 'recovery.img'
extracting vbmeta.img (0 MB) to disk... took 0.000s
archive does not contain 'vbmeta_system.img'
archive does not contain 'vbmeta_vendor.img'
extracting vendor_boot.img (64 MB) to disk... took 0.229s
extracting vendor_kernel_boot.img (64 MB) to disk... took 0.211s
extracting super_empty.img (0 MB) to disk... took 0.000s
extracting product.img (535 MB) to disk... took 2.350s
[liblp] Partition product_a will resize from 0 bytes to 561238016 bytes
extracting system.img (1316 MB) to disk... took 6.025s
[liblp] Partition system_a will resize from 0 bytes to 1380540416 bytes
extracting system_dlkm.img (0 MB) to disk... took 0.001s
[liblp] Partition system_dlkm_a will resize from 0 bytes to 348160 bytes
extracting system_ext.img (363 MB) to disk... took 1.572s
[liblp] Partition system_ext_a will resize from 0 bytes to 381079552 bytes
archive does not contain 'system_other.img'
extracting vendor.img (697 MB) to disk... took 2.867s
[liblp] Partition vendor_a will resize from 0 bytes to 731230208 bytes
extracting vendor_dlkm.img (50 MB) to disk... took 0.163s
[liblp] Partition vendor_dlkm_a will resize from 0 bytes to 53239808 bytes
archive does not contain 'vendor_other.img'
archive does not contain 'boot_other.img'
archive does not contain 'odm.img'
archive does not contain 'odm_dlkm.img'
archive does not contain 'system_other.img'
archive does not contain 'vendor_other.img'
extracting boot.img (64 MB) to disk... took 0.260s
archive does not contain 'boot.sig'
Sending 'boot_a' (65536 KB) OKAY [ 2.058s]
Writing 'boot_a' OKAY [ 0.206s]
extracting init_boot.img (8 MB) to disk... took 0.057s
archive does not contain 'init_boot.sig'
Sending 'init_boot_a' (8192 KB) OKAY [ 0.252s]
Writing 'init_boot_a' OKAY [ 0.031s]
extracting dtbo.img (16 MB) to disk... took 0.096s
archive does not contain 'dtbo.sig'
Sending 'dtbo_a' (16384 KB) OKAY [ 0.512s]
Writing 'dtbo_a' OKAY [ 0.056s]
extracting pvmfw.img (1 MB) to disk... took 0.005s
archive does not contain 'pvmfw.sig'
Sending 'pvmfw_a' (1024 KB) OKAY [ 0.031s]
Writing 'pvmfw_a' OKAY [ 0.006s]
extracting vbmeta.img (0 MB) to disk... took 0.000s
archive does not contain 'vbmeta.sig'
Sending 'vbmeta_a' (8 KB) OKAY [ 0.001s]
Writing 'vbmeta_a' OKAY [ 0.002s]
extracting vendor_boot.img (64 MB) to disk... took 0.276s
archive does not contain 'vendor_boot.sig'
Sending 'vendor_boot_a' (65536 KB) OKAY [ 2.025s]
Writing 'vendor_boot_a' OKAY [ 0.233s]
extracting vendor_kernel_boot.img (64 MB) to disk... took 0.226s
archive does not contain 'vendor_kernel_boot.sig'
Sending 'vendor_kernel_boot_a' (65536 KB) OKAY [ 2.013s]
Writing 'vendor_kernel_boot_a' OKAY [ 0.248s]
Sending sparse 'super' 1/13 (254972 KB) OKAY [ 8.081s]
Writing 'super' OKAY [ 0.798s]
Sending sparse 'super' 2/13 (254972 KB) OKAY [ 8.015s]
Writing 'super' OKAY [ 0.848s]
Sending sparse 'super' 3/13 (254972 KB) OKAY [ 8.122s]
Writing 'super' OKAY [ 0.824s]
Sending sparse 'super' 4/13 (254972 KB) OKAY [ 8.022s]
Writing 'super' OKAY [ 0.867s]
Sending sparse 'super' 5/13 (254972 KB) OKAY [ 8.041s]
Writing 'super' OKAY [ 0.852s]
Sending sparse 'super' 6/13 (254972 KB) OKAY [ 8.043s]
Writing 'super' OKAY [ 0.845s]
Sending sparse 'super' 7/13 (254972 KB) OKAY [ 8.036s]
Writing 'super' OKAY [ 0.877s]
Sending sparse 'super' 8/13 (254972 KB) OKAY [ 8.026s]
Writing 'super' OKAY [ 0.827s]
Sending sparse 'super' 9/13 (229012 KB) OKAY [ 7.243s]
Writing 'super' OKAY [ 0.798s]
Sending sparse 'super' 10/13 (254972 KB) OKAY [ 8.045s]
Writing 'super' OKAY [ 0.820s]
Sending sparse 'super' 11/13 (254972 KB) OKAY [ 8.003s]
Writing 'super' OKAY [ 0.883s]
Sending sparse 'super' 12/13 (254972 KB) OKAY [ 8.137s]
Writing 'super' OKAY [ 0.837s]
Sending sparse 'super' 13/13 (1168 KB) OKAY [ 0.039s]
Writing 'super' OKAY [ 0.009s]
Finished. Total time: 129.293s
Rebooting into bootloader OKAY [ 0.000s]
Finished. Total time: 0.050s
j@pop-os:~/lynx-factory-2023101300$
`