T295 wifi not working after downgrade

hi,



i have a samsung t295 binary 3, i needs lcd touchscreen replacement


but the touch does not work on a updated binary so i downgraded it to an earlier version, i have done this in the past and all is okay


just this 1 tab that i encountered this


wifi is not working, cannot turn on.


i tried all, even upgrading it now to binary 4 latest firmware


still wifi is not working.


anyone knows what could i do to make it work again?



i tested it before downgrade and all is working, just after downgrade, the wifi won't turn on.