Right now, iOS 10.2.1 is the latest public firmware that had put out by the Apple. This will be changed in a few days because iOS 10.3 is almost ready for the public. In the time period of last few months, we had to see a frequent jailbreak release for iOS 10 series. This rapid Cydia download delivery began since after the yalu jailbreak release by Luca Todesco. For your information, Italian hacker Todesco developed his old yaluX jailbreak to support with the version of iOS 10.2 using the bug report of Google's Project Zero which discovered by Ian Beer. Once after these root exploits reveal, most of the developers and hackers used them for new experiments like Luca did. AppleTV 4 jailbreak on tvOS 10.1 is also ready to publish with the help of Ian Beer's bug report.
There are many versions of fake Cydia installer for iOS 10 on the internet but you should remember that yalu jailbreak is the only possible way to download Cydia installer on your iPhone, iPad or iPod touch. Neither Pangu or TaiG teams could make iOS 10 jailbreak available even after the vulnerabilities reveal. Want to know about iOS 10.2.1 Cydia download? then this is the only way to know the most recent updates of iOS 10.2.1 jailbreak.
As of this writing, iOS 10.2.1 is getting a special character for the iPhone, iPad, and iPod touch users. What's the reason to notice that? It's just because iOS 10.2.1 is the most recent firmware which is available to the public. There are many users have already stuck in this version because Apple has closed the signing window for previous 10.2 update. Also, iOS 10.2.1 Cydia download topic is being talked by the jailbreak community since after the signing window closed.
We should mention that there were many jailbreak demos and rumors have been passing those days by the different hackers. Luca Todesco, iH8sn0w, @ijapija00, Pangu Team could be able to give the latest jailbreak updates to the Cydia install society but those were not for the public use. Among them, Luca Tedesco got a valuable place by releasing the yalu jailbreak iOS 10.2. This is just an update of his old stuff and he did deliver iOS 10 Cydia before iOS 10.2.1 Cydia download.
yalu jailbreak has become a most using tool right now. The founder of this tool is well known Luca Todesco and currently, it is available to download for iOS 10.2 jailbreak. As we mentioned before, the latest version of Todesco's yalu jailbreak was based on the exploits which discovered by Ian Beer on Google's Project Zero. Can I use yalu for iOS 10.2.1 Cydia download? The answer is no. Apple has already patched above exploits in the firmware version so, you have no ability to use yalu102 iOS 10.2.1 jailbreak. Don't be afraid because this is just the beginning which means Luca or any other developer will make the Cydia installer possible after finding the security holes of the latest firmware.
It is better to remind that the man behind the iOS 10.2 Cydia has not given any notice about iOS 10.2.1 - iOS 10.3 jailbreak yet. He also has noted that he is planning to stop his works on public jailbreaking after finishing the stable version of iOS 10.2.1 Cydia installer. It seems there's a chance of a new jailbreak release because 10.2.1 update is already out.
As regular iPhone, iPad or iPod touch users, we have no any path to know what things gonna happen in the future. Especially, the sudden releases of new jailbreaks so, only developers know the release date of their Cydia install app. If you remember the past, Pangu made the surprise jailbreak for iOS 7 - 9 versions. The members of the Pangu Team revealed a video demonstrate of iOS 10 jailbreak in the last year at the second Mobile Security Conference. That was the only tip from them for iOS 10 Cydia installer download. We couldn't hear a word from the Pangu jailbreak for a while so, they might develop a new jailbreak solution for an unexpected Cydia download delivery.
According to the related information and latest news, iDevices users are unable to jailbreak iOS 10.2.1 at present. The main incident to happen this is patching the root exploits in this newest firmware by the Apple. The jailbreak society has well-performed hackers so, it won't take long to find vulnerabilities in iOS 10.2.1 by those developers. Once after finding the weak place, they will probably create a new tool for Cydia download. We iDevice users have to do right now is watching the hide and seek game between Apple and the hackers.