How to Fix “failed in buffer_write(fd) (8, ret=-1)” Cydia Error When Installing Packages<img style="float: left; margin-right: 10px"  src="
http://www.iphonehacks.com/wp-content/uploads/2016/07/fix-cydia-error-failed-in-buffer_writefd-8-ret-1-1-194x129.png"> 
Users have been facing a lot of issues with the recent jailbreak tool released by Pangu for iOS 9.2 – iOS 9.3.3. We already showed how you can fix some of the common issues of Pangu jailbreak but a more troublesome problem that many users are facing is an error in Cydia that prevents packages from being installed on their device.   
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How to Fix “failed in buffer_write(fd) (8, ret=-1)” Cydia Error When Installing Packages