hi friend,
i have a vth1550ch-s2 and i flashed it with the wrong firmware same as you,
The problem was caused by flashing:
DH_VTHX421H_MultiLang_SIP_V4.410.0000000.4.R.20200221.bin
instead of
DH_VTHX421L... which is for this device.
and know its bricked, i can get any connexion working on it in NCOM or Putty or tftp server only a black screen and the red led of the power on the device, plz sir did you found any solution because i saw you have being in the same probleme before me.
Thanks
Kan de reached max capacity niet nabootsen met dezelfde NVR. Wanneer krijg je de melding?
Pas bij 10 tripwires krijg ik de melding 'Limit reached'.