I don't want reset all...I've not backup...
That may be your largest mistake mistake. Probably if upgrade failed it may be unrecoverable. It's possible that configuration backup is still available on nand but I'm not sure if it's persisted on net install.
Let me tell you a real story which happened to my friend three weeks ago. He was working on his office laptop and runs short on swap often. He decided to do something about it, so he booted Linux live CD and started gparted to shrink partition with data and expand swap space. Laptop have full battery for few hours, it was connected to network with UPS for 15 minute and diesel generators starting in few minutes. I'll add to that story that we were in rather new office where I didn't seen any power loss since I work there.
After accepting BIG RED WARNING that he should make a backup first he went eating - five minutes later all lights went off for about one minute. UPS didn't catch up because that day it was under maintenance for around 2 hours, laptop battery didn't worked due to some ACPI problem in live CD. Generators started but it was too late - shrinking process was interrupted and all data .... well, practically gone.
So, will you expect that system protected by two separated batteries system and diesel generator connected to reliable grid will fail in next 15 minutes? No - me neither, but that's why you should ALWAYS make a backup.
