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How to request a certificate and sign apps in OPDA
If you are not registered in OPDA, follow this video to register there:
Type this address in the location bar
If the page is not in English, click in English to translate
Click in login
Type username and password
Click in apply cer to request your certificate
Phone model
Type any number with 11 digits, starting with 13
Type your IMEI and confirm it
Type a remark to identify this cert
Wait the state "applying" turn into "normal" to download your cert
When the state is normal, you can download the cer and key files to sign apps offline in your PC or mobile phone
Now you can request your certificate and also sign apps with it online in OPDA
Click in signing software
Choose one certificate to use for signing
Choose the sis file you want to sign clicking in browse
Type a remark to identify this file
Download the signed file to your PC
Clicking in signed software you can check your signed files
You can download them again or delete from the system
In case of doubt, you can check the help section �