Thread: [HOWTO] Comprehensive Firmware Flashing Guide for N9
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juiceme is offline juiceme
2013-04-30 , 18:59
Community Council | Posts: 4,920 | Thanked: 12,867 times | Joined on May 2012 @ Southerrn Finland
#681
The error message "Downgrade Disallowed" is the reason.
You need to flash the device with the same or later version than what's in the device currently.

"DFL61_HARMATTAN_40.2012.21-3_PR_001" is smaller version than "DFL61_HARMATTAN_40.2012.21-3.335.1_PR_335"