[barryp]

i have my tecno s1 phone, i flashed it and now it can't power on and start
your help please

[xerxes]

i have my tecno s1 phone, i flashed it and now it can't power on and start
your help please

The phone might be stuck in flash mode, try long pressing the power button or disconnecting/reconnecting the phone’s battery then power on the phone.

Also, what was the phone’s original build no and which firmware build did you flash?
Was flashing successful or interrupted?