FPGA fallback (factory) image in EPCQ256 using local upgrade

[Altera_Forum]

Hi, 

 I boot my Cyclone V from a EPCQ256. I would like to have a fallback image as well as an application image on the EPCQ256. If I understand correctly I have to configure the EPCQ256 for 3-byte addressing, but Quartus configures it for 4-byte addressing.  Is there any guide for using a fallback image with EPCQ256?  Thanks in advance!

[Altera_Forum]

Could someone please explain what this means: 

 "A Programmer Object File for Local Update is a Programmer Object File that consists of a local update enabled Programmer Object File and additional local update enabled SRAM Object Files, and is used to program configuration devices in local update configuration mode. You create a local update enabled Programmer Object File by adding local update enabled SRAM Object Files to a Programmer Object File in the Convert Programming Files dialog box."  source: http://quartushelp.altera.com/15.1/#reference/glossary/def_pof.htm  How do I create a "local update enabled SRAM Object Files"?

[Altera_Forum]

I'm getting closer... 

https://documentation.altera.com/#/00021074-AA$NT00090116

[Yin1]

Hi sir,

Your question is very interesting, any update later? You can contact me by my email: Yin.Shuai@deetee.com. 

Thank you very much!

BR

Yin