I suspect that what you are seeing is not glue but the conformal coating to protect the electronics from water. You might want to check
this thread for one person's experience removing the µSD card from their Libra 2.
You may also want to check the
Tolino Vision 6 Bootloop thread in this forum. You should be able to obtain the correct image for your Tolino.
Another item is that for your request for an firmware image is that you will need to have Private Messages enabled before you can be sent the link. The easiest way to do this is to post in the
Requests to enable Private Messages thread to ask for PMs to be enabled.