add file to selected field (BLOB)

How I can add file to selected field (BLOB field)?
I dont want create new records.

when I add image to blob field I get message about wrong SQL syntax. I dont now why?

Sometimes when I add image into blob field and I try load this image in other program (navicat for mysql) i have wrong data in this field. When I save it on my hard drive I cant open it because mage file is broken.

When I do this all operation in Navicat everything was all right.

sory for my bad english.

For each separate problem you're having, open a bug report on http://bugs.heidisql.com/, including a precise reproduction recipe and source data (an image) if necessary.