GSI loads fine with DSU loader but fails from FastbootD

[Tech-e1]

Current Behavior:

Despite testing my device with DSU loader to see if it could boot. (Which it did well.) The device fails
with the dynamic partitions flashing instructions given here

Bootloader is unlocked

Describe the bug

I did run in to a dmverity issue with those instructions. (but i fixed that by doing fastboot --disable-verity --disable-verification )
Afterwards the device eventually landed me into a stock recovery screen (there appears to be no twrp yet for this device)
see photo

To Reproduce

flashing instructions given here
with the addition of --disable-verity --disable-verification

Expected behavior

To boot into LineageOS after BLU boot logo

Photos

yellow says "try again"

Smartphone (please complete the following information):

• Device:BLU M10L Mediatek8766
• Build Flavor: lineage-21.0-20240217-UNOFFICIAL-arm64_bvN
• Version

Additional context

firmware here
has boot_a & boot_b, vbmeta_a & vbmeta_b