To provide an image forming system capable of assisting printout from a portable information processor and receiving appropriate support when a trouble occurs, an image forming method, the image forming device, and a center server.

The image forming device has a print server, and a two-dimensional barcode including identification information and information related to the address of a job ID acquiring site is set in the image forming device. Then, the two-dimensional barcode is photographed/analyzed with a cellular phone with a camera function, the job ID is acquired, the job ID is transmitted to the center server and the address of the print server installed in the image forming device is acquired, and connection is established with the image forming device via the print server and the a file is printed out.