I don't have Wood R4,so i cant use it...
Thank you Catboy for answering me and helping when i needed it.(U answered a few questions for me for the past few days)
I use to have Wood R4 but i accidentally deleted it and now,it wont work anymore.
If it worked before and it was official, you could have a MicroSD problem.
Try back up your card and reformatting with this, following this guide