# Recovery of flash corrupted 802.11n-based ePMP devices caused due to power interruption during a software upgrade

**URL:** https://community.cambiumnetworks.com/t/recovery-of-flash-corrupted-802-11n-based-epmp-devices-caused-due-to-power-interruption-during-a-software-upgrade/45571
**Category:** ePMP
**Tags:** knowledge-base
**Created:** [May 23, 2016, 8:49pm UTC](https://community.cambiumnetworks.com/t/recovery-of-flash-corrupted-802-11n-based-epmp-devices-caused-due-to-power-interruption-during-a-software-upgrade/45571 "2016-05-23T20:49:34Z")
**Posts on this page:** 1
**Showing post:** 10

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### Author: ![aka](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/aka/32/31904_2.png) [@aka](https://community.cambiumnetworks.com/u/aka)
#### Post date: [August 20, 2025, 10:42am UTC](https://community.cambiumnetworks.com/t/recovery-of-flash-corrupted-802-11n-based-epmp-devices-caused-due-to-power-interruption-during-a-software-upgrade/45571/10 "2025-08-20T10:42:32Z")

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Hi @Mik ,

it is not possible to flash E1K FW into F400.  
F400 has dual memory and switches to the second bank in case of corrupted FW in thew first one.  
Dual bank radios recovery procedure: [ePMP Firmware Recovery](https://community.cambiumnetworks.com/t/epmp-firmware-recovery/66262)

If it does not help, I suggest to Raise Ticket in the top right corner of this page and our engineer will assist you to isolate it.

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