I bought a used ps3 slim with 160gb hdd and it was working well but it had version 4.81 and I wanted to update to version 4.82 to use online features. I tried in the settings but it was not able to download the update and so I tried with usb flash drive. I tried once but it stuck at 99%. I closed it and I tried again but the same happened and this is a loop. I searched for solutions and I found some , such as format the hdd from the pc. I tried with many ways to format it but it was not possible. I put it back in to the ps3 and the ps3 formatted the hdd and then it was starting again to do the update but again stuck at 99%. I did this many times and all the times had the same result. Some were saying that it is hdd's fault , some were saying it is version's fault. I tried with version 4.81 and 4.82 and the same result , stuck at 99%. I don't know what should I do. The only thing I am thinking is to buy a new hdd , but I don't know if it is hdd's fault. Can someone help me?