Change Bluetooth (LE) Connection Interval

Looking to hire someone with some knowledge of Bluetooth. We used to use the following commands to improve throughput on a bluetooth low energy connection on a Raspberry Pi 4: echo 6 > /sys/kernel/debug/bluetooth/hci0/conn_min_interval echo 20 > /sys/kernel/debug/bluetooth/hci0/conn_max_interval However, these no longer exist on our new system (NVIDIA Jetson Xavier NX). Only the following files are found: dut_mode force_bredr_smp le_max_key_size le_min_key_size We tried using hcitool cmd and lecup but the command is disallowed: sudo hcitool lecup --handle 24 --min 6 --max 7 --latency 0 --timeout 500 Our current setup is as follows: Distributor ID: Ubuntu Description: Ubuntu 18.04.4 LTS Release: 18.04 Codename: bionic Linux 4.9.140-tegra #1 SMP PREEMPT Wed Apr 8 18:15:20 PDT 2020 aarch64 aarch64 aarch64 GNU/Linux Wifi/Bluetooth Card: AW-CB375NF ● [login to view URL] - Bluetooth service Loaded: loaded (/lib/systemd/system/[login to view URL]; enabled; vendor preset: enabled) Drop-In: /lib/systemd/system/bluetooth.service.d └─[login to view URL] Active: active (running) since Mon 2020-06-22 22:32:43 EDT; 4min 44s ago Docs: man:bluetoothd(8) Main PID: 10341 (bluetoothd) Status: "Running" Tasks: 1 (limit: 4915) CGroup: /[login to view URL] └─10341 /usr/lib/bluetooth/bluetoothd -d --noplugin=audio,a2dp,avrcp On our old system the wifi/bluetooth chip was integrated into the board. This new one (NVIDIA Jetson Xavier NX) has an M.2 E slot instead. In summary, we need to change the change the bluetooth connection interval to a min/max of (6*1.25)ms. Right now the device is automatically sending a connection parameter update request: #37 [hci0] 25.726643 LE L2CAP: Connection Parameter Update Request (0x12) ident 1 len 8 Min interval: 40 Max interval: 56 Slave latency: 0 Timeout multiplier: 200