BOLT Arion (PL100)

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MT7621-based, dual-band and LTE router from the now-defunct “BOLT!” ISP from Indonesia.

Generic Router

ModelSoCCPU MHzFlash MBRAM MBWLAN HardwareWLAN2.4WLAN5.0100M portsGbit portsModemUSB
ArionMediaTek MT762188032128MediaTek MT7603E, MediaTek MT7612Eb/g/na/n/ac-2LTE-

Method A: Telnet Exploit

Requirements
  1. Run the FTP server in the firmware files folder
  2. Login to OEM firmware using `admin` password
  3. Go to “Maintenance” page
  4. Import `PL100_settings_telnet.dat`
  5. Wait for a reboot
  6. Log in to the router via Telnet using admin as the username and password
  7. Copy the firmware file to the router:
    ftpget <your computer IP> /tmp/openwrt-ramips-mt7621-bolt_arion-squashfs-sysupgrade.bin openwrt-ramips-mt7621-bolt_arion-squashfs-sysupgrade.bin
  8. Change to the directory where the firmware files are
    cd /tmp
  9. Flash openwrt
    mtd_write -e Kernel -r write /tmp/openwrt-ramips-mt7621-bolt_arion-squashfs-sysupgrade.bin Kernel

If all has gone well, the router will reboot to OpenWrt.

  1. Set your PC IP to 10.10.10.3 and gateway to 10.10.10.123
  2. Solder the serial connection in J4 (refer to the serial section for pinout)
  3. Connect to the router using serial with the following settings: 57600 baud, 8 data bits, no parity, 1 stop bits
  4. Power on the router and when it asks for the boot mode on the serial console, select 1: Load system code to SDRAM via TFTP.
  5. Type the openwrt initramfs-kernel.bin filename in Input Linux Kernel filename section
  6. Wait until the router booted up openwrt
  7. use sysupgrade to install squashfs-sysupgrade.bin
Architecture MIPS
Vendor Mediatek
bootloader U-Boot
System-On-Chip Mediatek MT7621
CPU/Speed mipsel_24kc @ 880MHz
Flash size 32 MB
RAM 128 MB
Wireless 2.4 GHz Mediatek MT7603, b/g/n
Wireless 5 GHz Mediatek MT7612, a/n/ac
Ethernet 2x 10/100/1000 BASE-TX Ethernet Interface (1x WAN, 1x LAN)
Serial Yes

Insert photo of PCB

PCB top

PCB bottom

Remove 2 screws at the bottom of the case, pry open the front case and then remove 2 screws that holding the PCB.

port.serial general information about the serial port, serial port cable, etc.

How to connect to the Serial Port of this specific device:

Connect to J4 or the neighboring test points (TP19-22), the pinouts from top to bottom:

J4 Test points
GND TP21
TX TP22
RX TP20
VCC TP19
Serial connection parameters
for BOLT Arion (PL100)
57600, 8N1

J4

COPY HERE THE BOOTLOG WITH THE ORIGINAL FIRMWARE


COPY HERE THE BOOTLOG ONCE OPENWRT IS INSTALLED AND RUNNING


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  • Last modified: 2022/04/27 16:28
  • by abdulaziz.amar