[Installer] Orbic RC400L ORB400L_V1.2.8_BVZRT: orbic + orbic-usb both fail (telnet + AT+SYSCMD rootshell)

### Prerequisites

- [x] I have read [CONTRIBUTING.md](https://github.com/EFForg/rayhunter/blob/main/CONTRIBUTING.md)

### Rayhunter Version

v0.10.1

### Device

Orbic RC400L

### Installer OS

Linux

### Describe the Issue

### What happened

Trying to install Rayhunter 0.10.1 on an Orbic RC400L hotspot from Ubuntu, both the `orbic` (network) and `orbic-usb` installers fail in different ways.

**Host OS:** Ubuntu (Linux 6.17.0-14-generic x86_64)
**Rayhunter version:** v0.10.1 (linux-x64 release zip)
**Device:** Orbic Speed RC400L
**Software Version (from web UI):** ORB400L_V1.2.8_BVZRT
**Hardware Version:** V1.1

I followed the “Installing from release” docs and got as far as running the installers.

---

### `installer orbic` (network installer) failure

Command:

```bash
sudo ./installer orbic --admin-ip 192.168.1.1 --admin-username admin --admin-password 'MY\_REAL\_ADMIN\_PASSWORD'

Logging in and starting telnet...
Failed to install rayhunter on the Orbic RC400L

Caused by:
0: failed to start telnet
1: error sending request
2: client error (SendRequest)
3: connection closed before message completed

Bus 001 Device 004: ID 05c6:f626 Qualcomm, Inc. MDM9207-MTP _SN:B475A275

sudo ./installer orbic-usb

WARNING: The orbic USB installer is not recommended for most usecases. Consider using ./installer orbic instead, unless you want ADB access for other purposes.
Forcing a switch into the debug mode to enable ADB
ADB enabled, waiting for reboot... it's alive!
Waiting for atfwd\_daemon to startup... done
Installing rootshell...
Failed to install rayhunter on the Orbic RC400L (USB installer)

Caused by:
Received unexpected response: AT+SYSCMD=mv /tmp/rootshell /bin/rootshell

adb kill-server
sudo ./installer orbic-usb

WARNING: The orbic USB installer is not recommended for most usecases. Consider using ./installer orbic instead, unless you want ADB access for other purposes.
Forcing a switch into the debug mode to enable ADB
Device already in command mode. Doing nothing...
ADB enabled, waiting for reboot... it's alive!
Waiting for atfwd\_daemon to startup... done
Installing rootshell...
Failed to install rayhunter on the Orbic RC400L (USB installer)

Caused by:
Received unexpected response: AT+SYSCMD=mv /tmp/rootshell /bin/rootshell

Android Debug Bridge version 1.0.41
Version 34.0.4-debian
Installed as /usr/lib/android-sdk/platform-tools/adb
Running on Linux 6.17.0-14-generic (x86\_64)

What I’m asking
Is firmware version ORB400L_V1.2.8_BVZRT currently supported?
Are the telnet login failure and the AT+SYSCMD=mv /tmp/rootshell /bin/rootshell response expected on newer Orbic firmware?
Is there a known workaround, or should this device/firmware be considered unsupported for now?
Happy to run additional diagnostic commands if that helps, as long as they’re reasonably safe and don’t risk bricking the hotspot.