Help lenovo a7600-f

Hey,
first sorry 4 my bad englisch :rolleyes:
my problem ....
i have the Lenovo A 7600-F Tablet and root it a long time ago
now my son do a update :crying: and the tablet restart , now he make a boot loop, not right starting.
can i repair the tablet or is it trash ?
if you need more info tells me I will try to gif they
Please can anyone help me out?
MfG Llzzard