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I have 16M flash memory in my Pix535, it is not adequate for the upgrade I wish to carry out even after deleting the PDM image. Can I upgrade the flash memory to 32M or 16 is the max memory I can have for Pix 535?
You can go for 32 MB or 64 MB flash memory option since the PIX/ASA software specifically from the 7.x and later, it needs more flash memory to operate.