Fixes Contained in 1.056007 Controller code level.
This is the list of fixes contained in the 1.056007 IP21 Micro-code.  If you don’t need one of these fixes, it is highly recommended that you use the 1.056005 controller code.  Controller code level 1.056007 is a beta code release.
4761  	PCL Grayscale Inconsistencies between IP21 and NP17
4840  	Extra blank page printed when stapling command included
4900  	Century Schoolbook PCL font does not format correctly
4921  	Puma custom paper prints about an inch offset
4943 	Cannot update Boot Flash image from 1.41 with 1.056005 code
4947  	Set default PMDD data trace off
4978  	PCL print file loads onto disk and hangs printer
4993  	Graphic line appears on IP21 output; IP40 and HP6 okay
5007  	PCL jobs from AS/400 incorrect
5073  	French translated PCL Fonts page has bad characters
5100  	Downloaded font corrupted, does not print correctly
5151  	Table data shifted to right
5191  	IP21 hard abort during Postscript Job
5209  	Job does not print, with no indication why
5264  	postscript job fails to print, inhibits MS cert.
5299  	Encoding of space control code
5652  	ESC sequence getting printed on the page
5719  	Token Ring Source Routing Not functioning.
5833 	Memory debug code bugs memory
6041 	Esc sequence prints                                                    
6092  	DHCP: increase retries to 1 min; change min lease time to 5 min          
6274 	Incorrect spacing of a font on an overlay        
6288 	Import buffer resizing change from base 
6326 	PCL5: Soft Intellifont barcode printed 
6330    Tokenring: Mac addr 10 40 xx xx xx xx may fail.  May not be able to ping the printer