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Forum Discussion
Can I upgrade SRX5308 firmware from 3.06 to 4.21
I plan to do this over the next 2 days. I still do not see why I cannot just upgrade the firmware and move on. The factory reset seems like a waste.
sc2018,
Typically these "laddered" upgrades include some update to the resident firmware of the device. The process of returning it to a factory reset is to clean up the boot image. Unfortunately taking these out of order has a high probability of creating a misalignment between the operating code in firmware and the boot image.
I don't know if a brick is possible, but you may need to back up and start from the reboot process if the latter updates don't take.
John
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