Well,as far as I know , there is a bank named " AGD ".You can transfer money that bank and you can withdraw Burmese Kyats here but you can only transfer USD 3,000 a day .You can go to that bank and find out for more details.Another way is what they called black market is that you look for a trustworthy Burmese who has oversea bank account.You transfer the money to his or her account in foreign bank and then, he/she will link up with people here and advise you where to get the same amount of Kyats here.
Hope my advise will help you !