[Xiaomi Poco F5 / Redmi Note 12 Turbo (China)] lazyc97:
EDIT: Nevermind, it seems like I need to install the Google USB driver during fastbootd (the recovery-like screen after the first reboot).

I always get fastboot: error: Failed to boot into userspace fastboot when trying to flash via fastboot. After running the script from the flash tool, it reboot to recovery, if I select "reboot to bootloader" on the recovery screen, I get the output below. Did I do something wrong?

Full output:

Flashing aospa.zip ...
--------------------------------------------
Bootloader Version...:
Baseband Version.....:
Serial Number........: 61bde63d
--------------------------------------------
extracting android-info.txt (0 MB) to RAM...
Checking 'product' OKAY [ 0.000s]
Setting current slot to 'b' OKAY [ 0.000s]
archive does not contain 'fastboot-info.txt'
extracting boot.img (192 MB) to disk... took 0.447s
archive does not contain 'init_boot.img'
extracting dtbo.img (24 MB) to disk... took 0.047s
archive does not contain 'dt.img'
archive does not contain 'pvmfw.img'
extracting recovery.img (100 MB) to disk... took 0.254s
extracting vbmeta.img (0 MB) to disk... took 0.000s
extracting vbmeta_system.img (0 MB) to disk... took 0.000s
archive does not contain 'vbmeta_vendor.img'
extracting vendor_boot.img (96 MB) to disk... took 0.270s
archive does not contain 'vendor_kernel_boot.img'
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
archive does not contain 'boot_other.img'
extracting odm.img (25 MB) to disk... took 0.096s
archive does not contain 'odm_dlkm.img'
extracting product.img (2055 MB) to disk... took 6.274s
extracting system.img (966 MB) to disk... took 2.782s
archive does not contain 'system_dlkm.img'
extracting system_ext.img (533 MB) to disk... took 1.507s
archive does not contain 'system_other.img'
extracting vendor.img (1964 MB) to disk... took 6.144s
extracting vendor_dlkm.img (78 MB) to disk... took 0.200s
archive does not contain 'vendor_other.img'
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting super_empty.img (0 MB) to RAM...
extracting boot.img (192 MB) to disk... took 0.459s
archive does not contain 'boot.sig'
extracting super_empty.img (0 MB) to RAM...
Sending 'boot_b' (196608 KB) OKAY [ 4.562s]
Writing 'boot_b' OKAY [ 0.385s]
extracting super_empty.img (0 MB) to RAM...
extracting dtbo.img (24 MB) to disk... took 0.053s
archive does not contain 'dtbo.sig'
extracting super_empty.img (0 MB) to RAM...
Sending 'dtbo' (24576 KB) OKAY [ 0.571s]
Writing 'dtbo' OKAY [ 0.016s]
extracting super_empty.img (0 MB) to RAM...
extracting recovery.img (100 MB) to disk... took 0.248s
archive does not contain 'recovery.sig'
extracting super_empty.img (0 MB) to RAM...
Sending 'recovery' (102400 KB) OKAY [ 2.395s]
Writing 'recovery' OKAY [ 0.077s]
extracting super_empty.img (0 MB) to RAM...
extracting vbmeta.img (0 MB) to disk... took 0.001s
archive does not contain 'vbmeta.sig'
extracting super_empty.img (0 MB) to RAM...
Sending 'vbmeta' (8 KB) OKAY [ 0.001s]
Writing 'vbmeta' OKAY [ 0.001s]
extracting super_empty.img (0 MB) to RAM...
extracting vbmeta_system.img (0 MB) to disk... took 0.000s
archive does not contain 'vbmeta_system.sig'
extracting super_empty.img (0 MB) to RAM...
Sending 'vbmeta_system' (4 KB) OKAY [ 0.001s]
Writing 'vbmeta_system' OKAY [ 0.001s]
extracting super_empty.img (0 MB) to RAM...
extracting vendor_boot.img (96 MB) to disk... took 0.271s
archive does not contain 'vendor_boot.sig'
extracting super_empty.img (0 MB) to RAM...
Sending 'vendor_boot' (98304 KB) OKAY [ 2.277s]
Writing 'vendor_boot' OKAY [ 0.148s]
extracting super_empty.img (0 MB) to disk... took 0.000s
Rebooting into fastboot OKAY [ 0.000s]
< waiting for any device >
fastboot: error: Failed to boot into userspace fastboot; one or more components might be unbootable.
Error: Flashing aospa.zip failed!
Press any key to continue . . .