Galaxy S II won't get past Samsung logo
I was trying to switch from AOKP to CM 10 on my Galaxy SII (SGH-T-989), so I booted into CWM recovery, did a factory reset and wiped the cache and dalvik cache. When I tried to flash Cyanogenmod, it gave me an error (the .zip was not valid or something to that effect), so I tried to restart into recovery again, but it wouldn't get past the Samsung logo. The same thing happens when I try to get into download mode. Odin somehow recognizes it anyway when I try to turn it on, but won't do anything.
tl; dr: Phone won't boot into regular, recovery, or download, but is somehow recognized by Odin.
Thanks in advance.