3cell tx lipo - cream crackered ??

[lordnikon]

Left my 3cell lipo plugged in my Tx over the winter and its discharged. Couldn't get any charge at 3S (under voltage limit) so hit it for 5 minutes at 2S and these are now up, however the 3S is still way down and not enough to charge at 3S rate

Is it officially knackered or can it be charged a 1S to bring the low one back up aswell ??