# Instability of the system after installing WP8548 **URL:** \ **Category:** mangOH Red\ **Created:** [July 31, 2018, 8:03am UTC](https://mangoh.discourse.group/t/instability-of-the-system-after-installing-wp8548/1776 "2018-07-31T08:03:33Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Louis96](https://avatars.discourse-cdn.com/v4/letter/l/4da419/32.png) [@Louis96](https://mangoh.discourse.group/u/Louis96)\ **Post date:** [July 31, 2018, 8:03am UTC](https://mangoh.discourse.group/t/instability-of-the-system-after-installing-wp8548/1776/1 "2018-07-31T08:03:33Z")
Hello, I worked with a WP7702 module last weeks, and I moved recently to a WP8548. I update the firmware and download the driver for this module. After changing the module, I tried to install and lauch an app but I encounter different issues : - I connect to the mangOH red with the command “ssh [root@192.168.2.2](mailto:root@192.168.2.2)”, and when I try to install an existing and working app ( Hello World ), I’m disconnected before being able to start the app - when I install an app on my device, the app is not saved on the device after a disconnection or when the card is power off - I got the following error when I install an app " Asset model for _app name_/0 is not found " , and then I’m disconnected of the mangOH. So I tried to replace the WP77 module and everything comes back normal. Do you have any idea of the origin of the problem and/or a solution ? Thank in advance Louis ---
**Author:** ![Louis96](https://avatars.discourse-cdn.com/v4/letter/l/4da419/32.png) [@Louis96](https://mangoh.discourse.group/u/Louis96)\ **Post date:** [July 31, 2018, 9:26am UTC](https://mangoh.discourse.group/t/instability-of-the-system-after-installing-wp8548/1776/2 "2018-07-31T09:26:14Z")
After replugging the WP8548, I cannot connect via ssh or ping the mangOH Red in any way