[Nothing Phone 1] the_raz:
Just tried flashing aospa-topaz-3.1 with fastboot update successfully according to the terminal. using latest adb/fastboot but just reboots to bootloader fastboot mode. After first update flash I entered recovery and factory reset it and then proceeded to run the command again in which it flashed the b_slot (might've been my fault for changing it in order to be able to entering recovery mode since it didn't work in slot a). Anyways I tried the same, it flashed the b slot and I entered recovery once again and ran the command again - doesn't boot. I've not set the a slot to active and I've flashed it again (after factory reset) but it just boots up into the fastboot mode.. Any ideas?

fastboot update aospa-topaz-3.1-phone1-20230521-image.zip
--------------------------------------------
Bootloader Version...: 00872-LAHAINA-2.487493.1
Baseband Version.....: 00781-LC_ALL_PACK-1
Serial Number........: c91203f0
--------------------------------------------
extracting android-info.txt (0 MB) to RAM...
Checking 'product' OKAY [ 0.002s]
Setting current slot to 'a' OKAY [ 0.001s]
extracting boot.img (96 MB) to disk... took 0.591s
archive does not contain 'boot.sig'
Sending 'boot_a' (98304 KB) OKAY [ 3.396s]
Writing 'boot_a' OKAY [ 0.322s]
extracting dtbo.img (24 MB) to disk... took 0.113s
archive does not contain 'dtbo.sig'
Sending 'dtbo' (24576 KB) OKAY [ 0.797s]
Writing 'dtbo' OKAY [ 0.031s]
archive does not contain 'dt.img'
archive does not contain 'recovery.img'
extracting vbmeta.img (0 MB) to disk... took 0.001s
archive does not contain 'vbmeta.sig'
Sending 'vbmeta' (8 KB) OKAY [ 0.001s]
Writing 'vbmeta' OKAY [ 0.007s]
extracting vbmeta_system.img (0 MB) to disk... took 0.000s
archive does not contain 'vbmeta_system.sig'
Sending 'vbmeta_system' (4 KB) OKAY [ 0.001s]
Writing 'vbmeta_system' OKAY [ 0.007s]
extracting super_empty.img (0 MB) to disk... took 0.001s
Rebooting into fastboot OKAY [ 0.002s]
< waiting for any device >
Sending 'super' (4 KB) OKAY [ 0.001s]
Updating super partition OKAY [ 0.017s]
Resizing 'odm_a' OKAY [ 0.004s]
Resizing 'product_a' OKAY [ 0.004s]
Resizing 'system_a' OKAY [ 0.004s]
Resizing 'system_b' OKAY [ 0.004s]
Resizing 'vendor_a' OKAY [ 0.004s]
Resizing 'vendor_b' OKAY [ 0.004s]
archive does not contain 'boot_other.img'
extracting odm.img (1 MB) to disk... took 0.008s
archive does not contain 'odm.sig'
Resizing 'odm_a' OKAY [ 0.004s]
Sending 'odm_a' (1384 KB) OKAY [ 0.041s]
Writing 'odm_a' OKAY [ 0.116s]
extracting product.img (1930 MB) to disk... took 12.778s
Invalid sparse file format at header magic
archive does not contain 'product.sig'
Resizing 'product_a' OKAY [ 0.004s]
Sending sparse 'product_a' 1/8 (262120 KB) OKAY [ 8.193s]
Writing 'product_a' OKAY [ 0.454s]
Sending sparse 'product_a' 2/8 (262124 KB) OKAY [ 8.435s]
Writing 'product_a' OKAY [ 0.451s]
Sending sparse 'product_a' 3/8 (262128 KB) OKAY [ 8.281s]
Writing 'product_a' OKAY [ 0.415s]
Sending sparse 'product_a' 4/8 (262124 KB) OKAY [ 8.452s]
Writing 'product_a' OKAY [ 0.448s]
Sending sparse 'product_a' 5/8 (262124 KB) OKAY [ 8.349s]
Writing 'product_a' OKAY [ 0.453s]
Sending sparse 'product_a' 6/8 (262136 KB) OKAY [ 8.181s]
Writing 'product_a' OKAY [ 0.468s]
Sending sparse 'product_a' 7/8 (262100 KB) OKAY [ 8.330s]
Writing 'product_a' OKAY [ 0.449s]
Sending sparse 'product_a' 8/8 (135544 KB) OKAY [ 4.623s]
Writing 'product_a' OKAY [ 0.320s]
archive does not contain 'product_services.img'
extracting system.img (1140 MB) to disk... took 7.783s
Invalid sparse file format at header magic
archive does not contain 'system.sig'
Resizing 'system_a' OKAY [ 0.004s]
Sending sparse 'system_a' 1/5 (262108 KB) OKAY [ 8.895s]
Writing 'system_a' OKAY [ 0.447s]
Sending sparse 'system_a' 2/5 (262120 KB) OKAY [ 9.056s]
Writing 'system_a' OKAY [ 0.454s]
Sending sparse 'system_a' 3/5 (262104 KB) Resizing 'odm_a' OKAY [ 0.004s]
Sending 'odm_a' (1384 KB) OKAY [ 0.044s]
Writing 'odm_a' OKAY [ 8.884s]
Writing 'system_a' OKAY [ 0.439s]
Sending sparse 'system_a' 4/5 (262140 KB) OKAY [ 8.655s]
Writing 'system_a' OKAY [ 0.454s]
Sending sparse 'system_a' 5/5 (114976 KB) OKAY [ 3.916s]
Writing 'system_a' OKAY [ 0.318s]
archive does not contain 'system_other.img'
extracting vendor.img (875 MB) to disk... took 5.718s
Invalid sparse file format at header magic
archive does not contain 'vendor.sig'
Resizing 'vendor_a' OKAY [ 0.004s]
Sending sparse 'vendor_a' 1/4 (262088 KB) OKAY [ 8.759s]
Writing 'vendor_a' OKAY [ 0.450s]
Sending sparse 'vendor_a' 2/4 (262124 KB) OKAY [ 7.976s]
Writing 'vendor_a' OKAY [ 0.441s]
Sending sparse 'vendor_a' 3/4 (262140 KB) OKAY [ 8.744s]
Writing 'vendor_a' OKAY [ 0.438s]
Sending sparse 'vendor_a' 4/4 (106828 KB) OKAY [ 3.611s]
Writing 'vendor_a' OKAY [ 0.260s]
archive does not contain 'vendor_other.img'
Rebooting OKAY [ 0.000s]
Finished. Total time: 191.429s

[/CODE]
Factory resetting in recovery says:
ERROR: recovery: [libfs_mgr] Unable to enable ext4 verity on /dev/block/by-name/metadata because /system/bin/tune2fs is missing
ERROR: recovery: Open failed: /metadata/ota: No such file or directory
Formatting /data...
Formatting /metadata...
Data wipe complete.

Will test to adb sideload the recovery option aswell. EDIT: Sideloading the zip ended in:"
[ICODE]adb sideload aospa-topaz-3.1-phone1-20230521.zip
Update package verification took 90.2 s (result 0)
Installing update...
ERROR: recovery: Error in /sideload/package.zip (status 1)
Install from ADB completed with status 1.
Installation aborted.

Going to try 3.0 and see if that makes a difference.

EDIT:Same result.

Went back to 1.1.7 using nothing-phone-tools (still bricked) and tried flashing fastboot update aospa-topaz-alpha-*-image.zip, unfortunately still same results as earlier tries :/