I had an issue with reboot on my tablet ubislate 7cz 7 inch display android jelly bean. I googled it and i found that wiping cache partition will help and i wiped cache partition and the tab booted correctly but most of my apps were not working when i open them it says it has been stopped working. I tried to factory reset but it says " ## childpid process encounter problems : Operation not permitted " Please help me guys. Thanks in advance.