# Ender 5 pro 4.2.7 MB and CRtouch. Z probe not working

**URL:** https://marlin.crc.id.au/forum/t/ender-5-pro-4-2-7-mb-and-crtouch-z-probe-not-working/2746
**Category:** Firmware Builder
**Created:** [18 September 2026 01:12 UTC](https://marlin.crc.id.au/forum/t/ender-5-pro-4-2-7-mb-and-crtouch-z-probe-not-working/2746 "2026-09-18T01:12:17Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![ds53](https://marlin.crc.id.au/forum/letter_avatar_proxy/v4/letter/d/8baadc/32.png) [@ds53](https://marlin.crc.id.au/forum/u/ds53)
#### Post date: [18 September 2026 01:12 UTC](https://marlin.crc.id.au/forum/t/ender-5-pro-4-2-7-mb-and-crtouch-z-probe-not-working/2746/1 "2026-09-18T01:12:17Z")

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New to this. Upgraded Ender 5 Pro with 32bit MB and CR touch.I cannot locate a firmware version that makes the Z probe work. I had this build 6faaa852 done yesterday using all options but still no luck. Any help would be appreciated.