Shonky code.
Try vtxhen 1.6 version, its said to be the best right now.
Is it possible to run vtxhen 1.6 with Al-Azif Exploithost? It doesn't seem to be possible to send payloads on FW 5.05 with Al-Azif Exploithost, it is missing the Original folder (which seems to be required to send the payload?). If I only use the exploit.html from vtxhen I'm not able to run backups (the lock stays on and it asks me to purchase the content)