ive a coolfire z50 and it has stopped working
the display is showing 1.21 0.00v
can anyone help me
Internal battery mods are a little bit of a pita to try and troubleshoot but here is a reddit thread with what looks like the same issue only one answer and no word as to whether it solved the issue or not
You can also try hard resetting the device with the manual on/off switch on the bottom. Switch it to off, and let it sit for 30 mins. Then, plug it into a charger and switch the device back to on.
The innokin site says pretty much the same thing