Hi everybody, well my issue is that I didn't submit MY band and I can't change info on it because I don't have a higher rank to do it, just the submitter can do it. What can I do to edit info I know perfectly? Thankx for your help.

The submitter doesn't get granted with privileges based on the fact that he submitted a band. It's all based on the rank system.
If you don't have the right to update certain fields, you can always flag a report with the information, so our trusted users or us mods can add it.