after flashing H2OS no longer boots in twrp

So H2OS boots up just fine. Fastboot mode works. When I boot into recovery mode the oneplus logo shows up, but it is as nothing happens afterwards. I left the device there for more than an hour and still nothing. Flashing from the OS twrp 2.8.7.0 or 3.0.0-2 has no change on this. Flashing from fastboot the same. When I try to boot from fastboot,I get the following error:

bernat@g22 ~/Downloads $ fastboot boot twrp-3.0.0-2-oneplus2.img
downloading ‘boot.img’…
OKAY [ 0.807s]
booting…
FAILED (remote: dtb not found)
finished. total time: 0.873s

bernat@g22 ~/Downloads $ fastboot flash recovery recovery.img
target reported max download size of 536870912 bytes
sending ‘recovery’ (31700 KB)…
OKAY [ 0.815s]
writing ‘recovery’…
OKAY [ 0.534s]
finished. total time: 1.349s

Any ideas?