This function also repairs phones with blinking and white screen (WSOD), mobile phones with message 'Configuration error, Please contact your network operator or service center'. To enable all the features of the upgraded firmware it is recommended to do settings reset after performing this flashing procedure. For this go to Menu -> Settings -> Master Reset -> Reset Settings.
1. Make sure your mobile phone's battery is fully charged. Battery discharge during unlocking/flashing process may damage the cell phone.
2. Power off phone, remove battery and sim card, reconnect battery and connect cable to phone and PC. Phone has to remain switched off.
3. Enter username and password
4. Select phone and model from the dropdown list (SONYERICSSON Z525) [2].
5. Check off 'Generate ATS' option [17].
6. Enter download area [16]. The list of available files will appear in the output window [18]. Select and download firmware file of the latest version (e.g. R7B039 on the picture) and required language file. Note, that the version of both Firmware and Language files MUST match. Explanation of language acronyms.

# Click 'Flash Menu' tab [4] and select previously downloaded firmware and default language [6]. Both files have to be flashed at the same time.
# Press 'Program Files to Phone Memory' [9].
# When prompted shortly press phone's "Power" button and follow the on-screen instructions. Note, that phone has to stay off all the time.