[Google Pixel 4a ROMs, Kernels, Recoveries, & Other] old.splatterhand:
Yes, i was also able to flash and boot it.

3 times i have tried to flash it and with the last one it worked.

The different step i made on third flash, i disabled vbmeta before.

And, maybe, I had the recovery from Bliss ROM running. But i'm not 100% sure about that.

Scratch that, i checked my cmd line. I flashed the boot.img from the unzipped ROM first.

Here is the cmd line:

C:\Users\xxxxxxxxxx\Desktop\platform-tools\crDroidAndroid-14.0-20240307-sunfish-v10.2>fastboot --dis
able-verity --disable-verification flash vbmeta_a vbmeta.img
Rewriting vbmeta struct at offset: 0
Sending 'vbmeta_a' (4 KB) OKAY [ 0.125s]
Writing 'vbmeta_a' OKAY [ 0.156s]
Finished. Total time: 0.484s

C:\Users\xxxxxxxxxx\Desktop\platform-tools\crDroidAndroid-14.0-20240307-sunfish-v10.2>fastboot --dis
able-verity --disable-verification flash vbmeta_b vbmeta.img
Rewriting vbmeta struct at offset: 0
Sending 'vbmeta_b' (4 KB) OKAY [ 0.125s]
Writing 'vbmeta_b' OKAY [ 0.140s]
Finished. Total time: 0.499s

C:\Users\xxxxxxxxxx\Desktop\platform-tools\crDroidAndroid-14.0-20240307-sunfish-v10.2>fastboot flash
boot_a boot.img
Sending 'boot_a' (65536 KB) OKAY [ 1.654s]
Writing 'boot_a' OKAY [ 0.421s]
Finished. Total time: 2.371s

C:\Users\xxxxxxxxxx\Desktop\platform-tools\crDroidAndroid-14.0-20240307-sunfish-v10.2>fastboot flash
boot_b boot.img
Sending 'boot_b' (65536 KB) OKAY [ 1.654s]
Writing 'boot_b' OKAY [ 0.437s]
Finished. Total time: 2.356s

C:\Users\xxxxxxxxxx\Desktop\platform-tools\crDroidAndroid-14.0-20240307-sunfish-v10.2>

C:\Users\xxxxxxxxxx\Desktop\platform-tools>fastboot update -w crDroidAndroid-14.0-20240307-sunfish-v
10.2.zip
--------------------------------------------
Bootloader Version...: s5-0.5-10252351
Baseband Version.....: g7150-00112-230505-B-10075601
Serial Number........: XXXXXJECXXXXXX
--------------------------------------------
extracting android-info.txt (0 MB) to RAM...
Checking 'product' OKAY [ 0.067s]
Setting current slot to 'b' OKAY [ 0.184s]
extracting boot.img (64 MB) to disk... took 0.231s
archive does not contain 'boot.sig'
Sending 'boot_b' (65536 KB) OKAY [ 1.600s]
Writing 'boot_b' OKAY [ 0.431s]
extracting dtbo.img (8 MB) to disk... took 0.020s
archive does not contain 'dtbo.sig'
Sending 'dtbo_b' (8192 KB) OKAY [ 0.293s]
Writing 'dtbo_b' OKAY [ 0.107s]
archive does not contain 'dt.img'
archive does not contain 'pvmfw.img'
archive does not contain 'recovery.img'
extracting vbmeta.img (0 MB) to disk... took 0.000s
archive does not contain 'vbmeta.sig'
Sending 'vbmeta_b' (4 KB) OKAY [ 0.131s]
Writing 'vbmeta_b' OKAY [ 0.069s]
extracting vbmeta_system.img (0 MB) to disk... took 0.000s
archive does not contain 'vbmeta_system.sig'
Sending 'vbmeta_system_b' (4 KB) OKAY [ 0.132s]
Writing 'vbmeta_system_b' OKAY [ 0.069s]
archive does not contain 'vbmeta_vendor.img'
archive does not contain 'vendor_boot.img'
extracting super_empty.img (0 MB) to disk... took 0.000s
Rebooting into fastboot OKAY [ 0.062s]
< waiting for any device >
Sending 'super' (4 KB) OKAY [ 0.000s]
Updating super partition OKAY [ 1.013s]
Resizing 'product_b' OKAY [ 0.000s]
Resizing 'system_b' OKAY [ 0.000s]
Resizing 'system_ext_b' OKAY [ 0.016s]
Resizing 'system_a' OKAY [ 0.000s]
Resizing 'vendor_b' OKAY [ 0.000s]
Resizing 'vendor_a' OKAY [ 0.004s]
archive does not contain 'boot_other.img'
archive does not contain 'odm.img'
archive does not contain 'odm_dlkm.img'
extracting product.img (1839 MB) to disk... took 6.024s
Invalid sparse file format at header magic
archive does not contain 'product.sig'
Resizing 'product_b' OKAY [ 0.005s]
Sending sparse 'product_b' 1/3 (258560 KB) OKAY [ 7.657s]
Writing 'product_b' OKAY [ 2.252s]
Sending sparse 'product_b' 2/3 (260796 KB) OKAY [ 6.132s]
Writing 'product_b' OKAY [ 1.199s]
Sending sparse 'product_b' 3/3 (205264 KB) OKAY [ 4.810s]
Writing 'product_b' OKAY [ 7.400s]
extracting system.img (1025 MB) to disk... took 4.646s
Invalid sparse file format at header magic
archive does not contain 'system.sig'
Resizing 'system_b' OKAY [ 0.000s]
Sending sparse 'system_b' 1/4 (258848 KB) OKAY [ 6.285s]
Writing 'system_b' OKAY [ 2.215s]
Sending sparse 'system_b' 2/4 (258192 KB) OKAY [ 6.000s]
Writing 'system_b' OKAY [ 1.183s]
Sending sparse 'system_b' 3/4 (257824 KB) OKAY [ 6.101s]
Writing 'system_b' OKAY [ 1.269s]
Sending sparse 'system_b' 4/4 (186712 KB) OKAY [ 4.397s]
Writing 'system_b' OKAY [ 1.314s]
extracting system_ext.img (688 MB) to disk... took 3.351s
Invalid sparse file format at header magic
archive does not contain 'system_ext.sig'
Resizing 'system_ext_b' OKAY [ 0.000s]
Sending sparse 'system_ext_b' 1/3 (258103 KB) OKAY [ 6.471s]
Writing 'system_ext_b' OKAY [ 2.488s]
Sending sparse 'system_ext_b' 2/3 (253170 KB) OKAY [ 6.192s]
Writing 'system_ext_b' OKAY [ 2.119s]
Sending sparse 'system_ext_b' 3/3 (96276 KB) OKAY [ 2.332s]
Writing 'system_ext_b' OKAY [ 0.984s]
extracting system_other.img (106 MB) to disk... took 0.314s
archive does not contain 'system.sig'
Resizing 'system_a' OKAY [ 0.000s]
Sending 'system_a' (109380 KB) OKAY [ 2.555s]
Writing 'system_a' OKAY [ 0.489s]
extracting vendor.img (639 MB) to disk... took 3.184s
Invalid sparse file format at header magic
archive does not contain 'vendor.sig'
Resizing 'vendor_b' OKAY [ 0.000s]
Sending sparse 'vendor_b' 1/3 (259776 KB) OKAY [ 6.415s]
Writing 'vendor_b' OKAY [ 2.317s]
Sending sparse 'vendor_b' 2/3 (262140 KB) OKAY [ 6.207s]
Writing 'vendor_b' OKAY [ 1.215s]
Sending sparse 'vendor_b' 3/3 (128264 KB) OKAY [ 3.039s]
Writing 'vendor_b' OKAY [ 0.620s]
archive does not contain 'vendor_dlkm.img'
archive does not contain 'vendor_other.img'
Erasing 'userdata' OKAY [ 5.715s]
Erase successful, but not automatically formatting.
File system type raw not supported.
Erasing 'metadata' OKAY [ 0.007s]
Erase successful, but not automatically formatting.
File system type raw not supported.
Rebooting OKAY [ 0.000s]
Finished. Total time: 155.548s