# mangOH system cannot be installed on wp77

**URL:** <https://forum.legato.io/t/mangoh-system-cannot-be-installed-on-wp77/2827>\
**Category:** Legato Application Framework\
**Created:** [November 29, 2017, 4:07pm UTC](https://forum.legato.io/t/mangoh-system-cannot-be-installed-on-wp77/2827 "2017-11-29T16:07:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lichen](https://avatars.discourse-cdn.com/v4/letter/l/a4c791/32.png) [@lichen](https://forum.legato.io/u/lichen)\
**Post date:** [November 29, 2017, 4:07pm UTC](https://forum.legato.io/t/mangoh-system-cannot-be-installed-on-wp77/2827/1 "2017-11-29T16:07:30Z")

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Hi all,

I was playing with mangOH Green so I need mangOH system fetched in [here](https://github.com/mangOH/mangOH). I have a wp7702 module with Legato 17.8.1. But I had problem when install the mangOH system in wp77. Here’s what I did:

- In the native Legato framework 17.8.1 folder installed with Developer Studio, run make wp77xx and built \> the Legato for wp77 successfully.
- Downloaded toolchain for wp76 from [here](https://source.sierrawireless.com/resources/airprime/software/wp76xx/wp76xx-firmware-release-6-components/) and installed in folder `opt/swi/y17-ext`
- After running `source bin/configlegatoenv` in legato root folder, cd into mangOH folder
- Went through as instructed in [mangOH](https://github.com/mangOH/mangOH) to enable the toolchain to build kernel modules.
- I added an entry in mangOH makefile for wp77xx as:  
`.PHONY: green_wp77xx`  
`green_wp77xx`:  
`mksys -t wp77xx $(MKSYS_ARGS_COMMON) $(MKSYS_ARGS_GREEN) mangOH_Green.sdef`
- Then run `make green_wp77xx` got me `mangOH_Green.wp77xx.update` system update file.
- Run `instsys mangOH_Green.wp77xx.update targetIP`.

But after several (I think more than one) reboots on wp77 the system is not listed after `app status`.  
On mangOH Green I connected the serial port to my laptop, the output of the port including `logread` after the initiation of mangOH installation, and port output when rebooting is attached. [log.txt](https://forum.legato.io/uploads/short-url/cWz9x7SWfc0idB2u8zMXfpqnfXw.txt) (344.3 KB)

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**Author:** ![achuang](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/achuang/32/132_2.png) [@achuang](https://forum.legato.io/u/achuang)\
**Post date:** [December 19, 2017, 9:26pm UTC](https://forum.legato.io/t/mangoh-system-cannot-be-installed-on-wp77/2827/2 "2017-12-19T21:26:28Z")

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Hi @lichen, can you clarify whether you have a wp77 module or a wp76 module?