To flash the Nokia Asha 501 RM-902, you cannot use the standard Android tools (like SP Flash Tool). You will need Nokia-specific service tools.
An older official service tool often used for "Dead Mode" flashing if the phone won't turn on. nokia asha 501 rm 902 flash file download
: Using a "Dead Mode" flash, users could force the firmware back onto a phone that refused to turn on. The Recovery Process To flash the Nokia Asha 501 RM-902, you