# Remapping GPIO4 to something else

**URL:** <https://community.zymbit.com/t/remapping-gpio4-to-something-else/1762>\
**Category:** Getting Started\
**Created:** [May 21, 2025, 8:50am UTC](https://community.zymbit.com/t/remapping-gpio4-to-something-else/1762 "2025-05-21T08:50:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Robrad](https://yyz1.discourse-cdn.com/flex027/user_avatar/community.zymbit.com/robrad/32/1197_2.png) [@Robrad](https://community.zymbit.com/u/Robrad)\
**Post date:** [May 21, 2025, 8:50am UTC](https://community.zymbit.com/t/remapping-gpio4-to-something-else/1762/1 "2025-05-21T08:50:23Z")

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Hi,

Is there a particular point in the setup sequence where the GPIO remapping needs to be performed for a zymkey 4 (on RPi4B)?

That is, having installed the drivers and used the GPIO4 default to successfully encrypt an SD (but still in dev mode), can we change GPIO pins or is it too late?

I think it depends on when the zk config gets read in the pi/zym boot sequence and I don’t know that.

Thanks!

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<div class="post-metadata">

**Author:** ![Robrad](https://yyz1.discourse-cdn.com/flex027/user_avatar/community.zymbit.com/robrad/32/1197_2.png) [@Robrad](https://community.zymbit.com/u/Robrad)\
**Post date:** [May 21, 2025, 8:59am UTC](https://community.zymbit.com/t/remapping-gpio4-to-something-else/1762/2 "2025-05-21T08:59:03Z")

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Ok, seen this: [ZYMKEY changing pin issue](https://community.zymbit.com/t/zymkey-changing-pin-issue/796)

Assuming that’s still true, several years on?