jffs2-modules-4.7.0-1-marvell- software package provides JFFS2 filesystem support, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install jffs2-modules-4.7.0-1-marvell-
jffs2-modules-4.7.0-1-marvell- is installed in your system.
Make ensure the jffs2-modules-4.7.0-1-marvell- package were installed using the commands given below,
$ sudo dpkg-query -l | grep jffs2-modules-4.7.0-1-marvell-*
You will get with jffs2-modules-4.7.0-1-marvell- package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | debian-installer udeb packages |
| Package | jffs2-modules-4.7.0-1-marvell- |
| Version | 4.7.8-1 |
| Description | JFFS2 filesystem support |
| Sub Section | Debian-installer |