If you want to install this kind of software, you can install it normally by selecting Trust Unsigned Software in the settings.
However, if there is any problem due to the installation of unsigned software, you must bear it yourself.
Question 2: When downloading the software, the installation failed. What do you mean the installation package is unsigned? Go to Baidu to download it again. APK without signature cannot be installed.
Question 3: What do you mean the update package is unsigned? This may mean that your installation package failed verification. Let me quote someone else's answer: you may ask what is the use of certificates? Certificates are used to sign software. Software can't be signed without a certificate, so what's the use of software signing? First of all, we need to understand the function of signature. The third edition of S60 has greatly improved the security, and has stricter regulations on the installation and operation of third-party software in the system. Some operations involving mobile phone software and hardware security/personal information security are particularly restricted (for example, automatic startup of mobile phone startup is one of the restricted functions). The application must obtain a "signature" to realize these particularly restricted functions. In other words, someone should be responsible for the safety of this operation! A program without any signature cannot be installed and run. Signature: It refers to writing specific tag information in a specific field of an application, indicating that the software has passed the audit of the signer. The signer is responsible for the security of the software. There are three kinds of signatures: 1. Symbian signature. Which is the official signature of Symbian mobile phone operating system. Software that has passed Symbian security certification will be signed by Symbian. This software has the highest security level. It can be installed/run normally/on the mobile phone and realize all the functions provided by the software. Obtaining Symbian signature requires the software author to deal directly with Symbian officials. For various reasons, not all software authors have the ability to obtain this certification. 2. Signature of the author. The author of the software signed his name when he released the software. This kind of software can be installed and run on your mobile phone (you may encounter a security warning and you can skip it). But those "specially restricted" functions cannot be realized. If a software doesn't involve this function at all, it is entirely possible for the software author to sign it himself. Another possibility is that although some functions of the software are within the scope of "special restrictions", they are not the main functions. The software author may also release an "author's signature version", which can normally use most functions, but will lose some specific functions. For example, there is such a version of the "incoming call" software that almost all functions can be used, but it can't be started automatically. 3. User signature. (It is the kind used in the certificate area now, at least after reading this paragraph. Strictly speaking, this should belong to the "developer signature". Because Symbian provides a kind of "development certificate" for software developers, the original intention is to let software developers do software testing. This "development certificate" is associated with the IMEI code of the machine used for testing. The software signed with this certificate can only be used on the machine corresponding to the IMEI code, not on other machines. Our so-called "self-signature" is actually in this way. To put it bluntly, you said you were developing software, you provided the IMEI code of your tester, and Symbian issued you a "development certificate". You use this certificate to sign your Test Software. You are responsible for your "development behavior"! That's all. In addition, the development certificate is valid for half a year from the date of issuance. However, within the validity period of the certificate, there is no limit on the use time of the signed program. If you want to sign, you can apply for a new certificate and signing tool in Saipan Forum.
Question 4: qq installation failed. What do you mean the installation package is not signed? Reload it! This is not a big problem.
Question 5: When downloading the software, what does it mean that the installation is unsigned? Hello, please go to the official website to download. If there is no signature, you can sign it with a tool. This is the security mechanism of Android system, and every software should be signed. If you want to use the signing tool, you need to install JAVA first, and then configure the environment variables. After completing these steps, you can use the signing tool to sign. It is recommended that you use apk Manager.
Question 6: What happens when the package is unsigned when installing WeChat? It may not be the official version of WeChat. Download the official version again.
There is a network problem when downloading the installation package, which leads to the download damage of the installation package;
The downloaded version of WeChat is relatively low, please download the latest version of WeChat;
Set the red security option to allow installation of unknown software!
Question 7: Why can't the downloaded things be installed? What is the problem that there is no signature on the installation package? My phone checks the phone memory, and the installation package may be damaged.
Question 8: Why do you install software in Huawei application market, but it shows that the installation package is unsigned? This is a very common phenomenon. The landlord is used to it, because there are few things in the mobile phone market, so it is normal that some software can't be found. After the installation, I asked you to update because the software itself has a higher version, but there is no updated version on the market. If the landlord is in trouble, he can go to other markets to download it. I use the application treasure, which is rich in software resources. Generally, the game I am looking for will be in it, and the update will be faster, but sometimes this happens, but rarely, because after all, the market update speed is still slower than the software itself.
Question 9: The installation software is said to be an unsigned update package. How to solve the problem that people's eyes are like small shots in life?
Question 10: What is a signature installation? You may ask, what is the use of certificates? Certificates are used to sign software. Software can't be signed without a certificate, so what's the use of software signing?
First of all, we need to understand the function of signature. The third edition of S60 has greatly improved the security, and has stricter regulations on the installation and operation of third-party software in the system. Some operations involving mobile phone software and hardware security/personal information security are particularly restricted (for example, automatic startup of mobile phone startup is one of the restricted functions). The application must obtain a "signature" to realize these particularly restricted functions. In other words, someone should be responsible for the safety of this operation! A program without any signature cannot be installed and run.
Signature: It refers to writing specific tag information in a specific field of an application, indicating that the software has passed the audit of the signer.
The signer is responsible for the security of the software. Among them, there are three kinds of signatures:
1.Symbian signature.
Which is the official signature of Symbian mobile phone operating system. Software that has passed Symbian security certification will get Symbian.
Sign. This software has the highest security level. Can be installed/run normally on the mobile phone/and can realize all the functions provided by the software.
Obtaining Symbian signature requires the software author to deal directly with Symbian officials. For various reasons,
Not all software authors have the ability to obtain this certification.
2. Signature of the author.
The author of the software signed his name when he released the software. This kind of software can be installed and run on the mobile phone (it may encounter security problems).
Sex warning, can be skipped). But those "specially restricted" functions cannot be realized. If a piece of software doesn't involve such a function at all, then
It is entirely possible for the software author to sign by himself. Another possibility is that although some functions of the software are "specially restricted"
Range, but not the main function. The author of the software may also publish an "author's signature version", and most of them can be used under normal circumstances.
Function, but some specific functions will be lost. For example, there is such a version of the "incoming call" software, almost all functions can be used, but not.
Boot up.
3. User signature. (It is the kind used in the certificate area now. At least read this paragraph. )
Strictly speaking, this should belong to the "developer signature". Because Symbian provides a kind of "development certificate" for software developers, the original intention is
It is software developers who do software testing. This "development certificate" is associated with the IMEI code of the machine used for testing. Use this
The software signed by certificate can only be used on the machine corresponding to IMEI code, but not on other machines.
Our so-called "self-signature" is actually in this way. To put it bluntly, you said that you develop software and you provide your tester.
IMEI code, Symbian gives you a "development certificate", and you use this certificate to sign your "test software". You are right about yourself.
Responsible for "development behavior"! That's all. In addition, the development certificate is valid for half a year from the date of issuance, but it is signed within the validity period of the certificate.
There is no limit to the use time of the program.
If you want to sign, you can apply for a new certificate and signing tool in Saipan Forum.