How to force TRIM on Android device? With 4.3 enabling the support for TRIM (though I read that it was present since the first JB). I was wondering if there is a way for me to force TRIM on my device? Is there an app that I can sideload and have it issue it? I have a rooted chinese Tablet running on 4.2.2 JellyBean release.

Just to add, it's a PiPo M1 Max tablet.
There is an app called LagFix, which can let you trim your device literally.

It can only run if the device is rooted, and since your device is already rooted then it is perfect for you.

And here is the thread on Xda developers about LagFix.

I hope it helps.