If the device only vibrates and won't turn on, try flashing with the "Dead Phone" mode enabled in Phoenix.
| Region / Variant | Firmware Version | Android Version | Build Number | |----------------|------------------|----------------|---------------| | Global (EU) | 1.2.4.2 | 4.1.2 (Jelly Bean) | 1.2.4.2_A | | India | 1.2.4.1 | 4.1.2 | 1.2.4.1_IN | | China | 2.0.0.3 | 4.1.2 | 2.0.0.3_CN | | APAC (Asia-Pacific) | 1.2.3.0 | 4.1.2 | 1.2.3.0_APAC | nokia rm 645 flash file