use Dataprint DP005 for refill.
if the led still blinking :
1. turn the power off.
2. plug the power cable off.
3. press & hold power button, plug power cable
4. press resume button twice !!
5. release power button.
6. turn the printer on again.
if the led still blinking, do that ways several times (in my case, i repeat it 5 times)
good luck