Hello everyone!!! A friend of mine have ipad 2 with ios 706 and is unable to print with his hp desk jet 3630 "air print ready" with this "horror ipad 2". He downloaded print pro lite in his ipad 2 but when he launches print pro lite, this application tells it needs ad least ios 8 to work !!!!. using his phone huawei p9 he have NO PROBLEM to comunicate with the printer via wifi..!!!!!! He asked me to update his ipad 2 ios 706 to ios 8 gsm, found and downloaded the file ,installed itunes on windows 10 64 bit followed instructions but it keeps telling : Could not update ipad "roby ipad". and 'An unknown error occurred (3194) (.............There is no problem on the files hosts !!!!....................) Then i tryed to update ipad 2 from my imac el capitan using itunes and kepps telling the same thing : Could not update ipad "roby ipad". and 'An unknown error occurred (3194) Before trying to do update i made a backup of the ipad 2 with itunes but this itunes tells me that 51 applications of this ipad havent been saved to the backup because they are not listed in the "PAY FOR ANYTHING" Appstore. With itunes the only choice possible is update to the last ios 932 that I know would transform this ipad 2 in an unusable piece of metal and glass !!!! Please there is a way to update from ios 706 to ios 8 without lose all programs installed so far !?!? Is it the way apple support his customers !?!? I think after this I would never buy anything labeled apple & co !!!! Have a good time everyone and many thanks if someone replies to my question : how to update ipad 2 ios 706 to ios 8 without losing files and applications installed !!!!!!