During installing blackberry application through OTA this the following error message may occur.
“Invalid 907 COD: Unable to import ZIP file”.
To resolve this problem:
If the cod file size is more than 64K then Rename your big *.cod file to *.zip file and unzip it. Then there will be several smaller *.cod files. Now delete the *.zip file.
Also the details soltion of this error is described in this Knowledge Base Article.