# CR Touch & BL Touch

**URL:** https://marlin.crc.id.au/forum/t/cr-touch-bl-touch/994
**Category:** Support
**Created:** [27 June 2022 16:21 UTC](https://marlin.crc.id.au/forum/t/cr-touch-bl-touch/994 "2022-06-27T16:21:30Z")
**Posts on this page:** 6
**Page:** 1

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### Author: ![Doxyc](https://marlin.crc.id.au/forum/user_avatar/marlin.crc.id.au/doxyc/32/506_2.png) [@Doxyc](https://marlin.crc.id.au/forum/u/Doxyc)
#### Post date: [27 June 2022 16:21 UTC](https://marlin.crc.id.au/forum/t/cr-touch-bl-touch/994/1 "2022-06-27T16:21:30Z")

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I’ve got an Ender 3 Pro. Firstly, I don’t see the Pro listed specifically, so I had to select the 4.2.2 Ender 3 option. I found out additionally, the Pro now has two different chips. One is 512k(which mine has) and a 256k. These are found by physically reading the chip.

So is the 3 Pro included under this option & does the firmware accommodate both chips?

My second question, are the CR Touch & BL Touch equally supported by the firmware on your site? I want to get the CR Touch, & I want to make sure it’ll be fully supported.

Thank you for your time.

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### Author: ![CRCinAU](https://marlin.crc.id.au/forum/user_avatar/marlin.crc.id.au/crcinau/32/1337_2.png) [@CRCinAU](https://marlin.crc.id.au/forum/u/CRCinAU)
#### Post date: [28 June 2022 00:05 UTC](https://marlin.crc.id.au/forum/t/cr-touch-bl-touch/994/2 "2022-06-28T00:05:55Z")

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As far as the firmware is concerned, the Ender 3 and Ender 3 Pro are the same printer.

As are the CRTouch and BLTouch - they both operate exactly the same.

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### Author: ![Doxyc](https://marlin.crc.id.au/forum/user_avatar/marlin.crc.id.au/doxyc/32/506_2.png) [@Doxyc](https://marlin.crc.id.au/forum/u/Doxyc)
#### Post date: [8 July 2022 02:50 UTC](https://marlin.crc.id.au/forum/t/cr-touch-bl-touch/994/3 "2022-07-08T02:50:41Z")

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So I’ve got my CR touch installed on my Ender 3 Pro 4.2.2. board. It won’t take any of the new firmware I try to upload to it via MicroSD.

Suggestions?

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### Author: ![CRCinAU](https://marlin.crc.id.au/forum/user_avatar/marlin.crc.id.au/crcinau/32/1337_2.png) [@CRCinAU](https://marlin.crc.id.au/forum/u/CRCinAU)
#### Post date: [8 July 2022 03:03 UTC](https://marlin.crc.id.au/forum/t/cr-touch-bl-touch/994/4 "2022-07-08T03:03:50Z")

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Start with the [Ender 3 V2 FAQ](https://marlin.crc.id.au/forum/t/ender-3-v2-frequently-asked-questions/17) and go from there.

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### Author: ![Doxyc](https://marlin.crc.id.au/forum/user_avatar/marlin.crc.id.au/doxyc/32/506_2.png) [@Doxyc](https://marlin.crc.id.au/forum/u/Doxyc)
#### Post date: [8 July 2022 03:53 UTC](https://marlin.crc.id.au/forum/t/cr-touch-bl-touch/994/5 "2022-07-08T03:53:41Z")

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Not helpful, but thanks. Just found out my board has not taken any firmware updates I’ve tried since loading Marlin bugfix-2.1.x

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### Author: ![CRCinAU](https://marlin.crc.id.au/forum/user_avatar/marlin.crc.id.au/crcinau/32/1337_2.png) [@CRCinAU](https://marlin.crc.id.au/forum/u/CRCinAU)
#### Post date: [8 July 2022 04:06 UTC](https://marlin.crc.id.au/forum/t/cr-touch-bl-touch/994/6 "2022-07-08T04:06:39Z")

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Most problems here are due to preparation of the SD Card - which the FAQ mentions in depth.