Before flashing please take a backup of your important data like images, messages and contacts. After flashing you will lose your all of data and your mobile will restored in its original settings.Download links:
Latest version: 1102.0.8858.12461
Notice: Currently the downloading links of all lumia mobiles unavailable on internet. So Nokia Lumia 505 downloading links are not working yet. Because nds-2 server is down. We will update working downloading links very soon.