When these issues arise, the most reliable solution is to flash the original firmware. Among the many tools available for Nokia devices, remains a favorite among professional technicians because of its ability to bypass Nokia’s SLA (Secure Loading Authority) and DM-Verity checks.
No. The software alone will not work for Nokia RM-1187 due to authentication checks. You need the physical Miracle Box (or a licensed dongle). nokia rm-1187 flash file miracle box
Nokia_RM-1187_MT6761_9.0_Pie_ or Nokia_2.2_MT6761_SP_Flash_Tool_ When these issues arise, the most reliable solution