Hi, if I have a cisco switch with 16 Mb flash ram , that means I have to boot only 12.2 version , can I use TFTP server and force the switch to boot a 15 ios version? 3560-48PS-S is the switch and image ipbasek9-mz with 128 MB DRAM/16 MB flash !! on ebay they sell this switch close to 35$ and if is working with tftp, i can lab easy for my CCNP Switch exam!! Thank you!!!