i need Root expanded, sorry for not clarifying before.
tried this
it worked in other router,
not working here
ubus call system board
{
"kernel": "5.15.137",
"hostname": "router",
"system": "MediaTek MT7628AN ver:1 eco:2",
"model": "TP-Link TL-MR3420 v5",
"board_name": "tplink,tl-mr3420-v5",
"rootfs_type": "squashfs",
"release": {
"distribution": "OpenWrt",
"version": "23.05.2",
"revision": "r23630-842932a63d",
"target": "ramips/mt76x8",
"description": "OpenWrt 23.05.2 r23630-842932a63d"
}
}