Glad to share with you the Stock Firmware for TS4, Tronsmart Quad Core Smart Phone.
This is the rom by TF card, so it is easy to handle.
Click here Download Firmware
This is instruction for Flashing Tronsmart TS4 by TF card
1.Copy the update_0412.ZIP to tf card or your ts4 directly, no need to uncompress.
2.Power off the TS4, or remove the battery of your phone to make sure power off.
3.Then press power & volume+ at the same time, a yellow exclamation mark would appear, then press power again, load to R mode.
4.Choose wipe date/factory reset by using volume+&-, press home button= enter, it may take 5s before next step appear
5.choose yes -delete all date.
6. then choose wipe cache partition
7. apply update from sdcard, and choose update_0412.ZIP, flashing begins. it will take 2-5 mins.
after finished, it will be back to R mode menu,choose reboot system now, everything is ok.