It's actually quite simple. Does your mobile phone have traffic? If you have opened GPRS, just download and install a software called "Direct Sign Tool". Open the "Direct Signature Tool" first, then find the software you want to install in the memory card of your mobile phone, and click Sign to install it! If there is no mobile phone traffic, there are three other ways: 1, download the mobile phone certificate directly to the computer (the certificate can be applied in Saipan forum, provided that you have registered a Saipan account before, note: it is generally best to sign it at 165438+ 0: 30 am). Please refer to the tutorial on Saipan forum for the operation process, so I won't explain it in detail here. This method is troublesome and suitable for computer experts. Suggestions are for reference only. 2. Download the certificate and key first, but only to the mobile phone, and then install a software called "signature-free". The software itself can be found in all major mobile phone forums. If you can't find it, you can find me. I'll send it to you by email. After installing Free Signature, open Free Signature, then import the certificate and key into the software separately, and then sign the software to be installed. It's okay! 3. crack the phone. This method is suitable for experienced players. First, go to Saipan Forum to find a software called "Cracking Assistant", preferably signed by someone. If it is unsigned, sign it before installation. After the installation is successful, the "System Cracking" icon will appear. Enter "System Cracking" and tick before the visa-free patch, then exit. Later, you can install the software you want to install without signing it. I hope I can help you! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Actually, installing software is not so dangerous. This is a very irresponsible behavior. It doesn't matter. If you are really worried, install an antivirus software. In fact, most software does not need to be signed! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * using UC browser will not get stuck, please feel free to use it!