BE98 v2 - Firmware from beta 2 will not apply

[unisoftenterprises]

Router Model Affected
Models: GT-BE98U
Not the BE98 Pro model as in UK and BE98U is the model.

Firmware Version Affected
3006.102.1_1-gnuton0_beta2

Is this bug present in upstream Merlin releases too?
Not applicable as Merlin only does the PRO model.

Describe the bug
Brand new GT-BE98U hardware version 2. Applies latest Asus firmware fine.
When going to apply GNUTON build, a firmware unsuccessful message because of transmission error or model.
Checksum fine.

To Reproduce
Get v2 BE98
Apply GNUTON Beta 2 firmware, watch for error dialogue.

Expected behaviour
For it to apply.