Decrypting Sdcard error: Encryption process was encrypted.Please contact administrator for support

I have a Blackberry Z10. I encrypted my memory card in 10.2 OS and now it got upgraded to 10.3 OS. I tried decrypting it but there is always an error telling : "Encryption process was encrypted.Please contact administrator for support".
After this update i am not able to store anything onto my memory card or delete anything from it. I am able to access all the files present in it when it is present in my phone or when i remove it and put it in my laptop. But Problem is I am not able to add or delete any file. I tried formatting from phone as well as from lappy but nothing worked.
Please help me out with it , where even formatting my card will do. I just need my memory card to work.

connect to your pc ,you will see y drive and z drive ,copy whatever you need on your pc and buy another sd card then copy your files the same way to the new sd card

I don't think there is something wrong with my memory card. I just need to know is there any possibility of decrypting my memory card back.

that's something you need it to do before you updated

What if i roll back to the previous OS? Will i be able to decrypt it?

nope,your pretty much done
you're lucky enough to be able to access your files

Cool. Thank you. If by chance if there is any other option Please do let me know.

save everything and try to format the sd card with a different pc

I tried, but it failed.. It is not get formatted.

burn it and buy another one