# Unable to relock the bootloader

**URL:** <https://community.iode.tech/t/unable-to-relock-the-bootloader/2457>\
**Category:** System and Apps\
**Created:** [24 March 2024 12:42 UTC](https://community.iode.tech/t/unable-to-relock-the-bootloader/2457 "2024-03-24T12:42:13Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Lazarus](https://community.iode.tech/letter_avatar_proxy/v4/letter/l/4da419/32.png) [@Lazarus](https://community.iode.tech/u/Lazarus)\
**Post date:** [11 September 2024 16:17 UTC](https://community.iode.tech/t/unable-to-relock-the-bootloader/2457/2 "2024-09-11T16:17:25Z")

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Same issue here. A FairPhone 4 thread at [FP4 - Unable to relock bootloader - #6 by vince31fr](https://community.iode.tech/t/fp4-unable-to-relock-bootloader/416/6) suggests installing an avb\_key to verify the OS, but I don’t know if a similar approach would fix the issue for FairPhone5, or if such a file exists.

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_[View the full topic](https://community.iode.tech/t/unable-to-relock-the-bootloader/2457)._