fis unlock

Name

fis unlock -- Unlock flash area

Synopsis

fis unlock {-f flash_address} {-l length}

Arguments

NameTypeDescriptionDefault
flash_addressNumberAddress of area to be unlocked. 
lengthNumberLength of area to be unlocked. 

Description

This command is used to unlock a portion of flash memory forcibly, allowing it to be updated. It must be issued for regions which have been locked before the FIS can reuse those portions of flash.

Note: Some flash devices power up in locked state and always need to be manually unlocked before they can be written to.

Examples

Unlock an area of the flash

RedBoot> fis unlock -f 0xa0040000 -l 0x20000
... Unlock from 0xa0040000-0xa0060000: .

2017-02-09
Documentation license for this page: Open Publication License