i have problem in loading content pakage for 3120 while flashing

can any 1 explain me

hi
your problem is only one 3120 or all 3120 cannot flash cnt?
give us more details pls.

br

most of 3120 .yesterday i tried around 8 3120 s in which only 1 i was able to load

hi
maybe you need to check the cable,try using other cable.