# Fatal failed to fork

**URL:** <https://discourse.pi-hole.net/t/fatal-failed-to-fork/45580>\
**Category:** Community Help\
**Created:** [March 20, 2021, 3:04pm UTC](https://discourse.pi-hole.net/t/fatal-failed-to-fork/45580 "2021-03-20T15:04:20Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Bucking\_Horn](https://discourse-cdn.pi-hole.net/user_avatar/discourse.pi-hole.net/bucking_horn/32/18719_2.png) [@Bucking\_Horn](https://discourse.pi-hole.net/u/Bucking_Horn)\
**Post date:** [March 20, 2021, 4:08pm UTC](https://discourse.pi-hole.net/t/fatal-failed-to-fork/45580/2 "2021-03-20T16:08:38Z")

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Supporting precompiled _`pihole-FTL`_ binaries for ARMv4, ARMv5 and ARMv8 was only recently [added with FTL v5.3](https://discourse.pi-hole.net/t/pi-hole-core-web-v5-2-and-ftl-v5-3-released/40909).

Before that, you would have been required to compile _`pihole-FTL`_ for armv5 yourself (it still could be for more exotic specimen).

If you compiled _`pihole-FTL`_ yourself, upgrading FTL could result in failure.

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_[View the full topic](https://discourse.pi-hole.net/t/fatal-failed-to-fork/45580)._