Arcadyan ARV452CPW

This device is NOT RECOMMENDED for future use with OpenWrt due to low flash/ram.
DO NOT BUY DEVICES WITH 4MB FLASH / 32MB RAM if you intend to flash an up-to-date and secure OpenWrt version onto it! See 4/32 warning for details.

1) This device does not have sufficient resources (flash and/or RAM) to provide secure and reliable operation.
This means that even setting a password or changing simple network settings might not be possible any more, rendering the device effectively useless. See OpenWrt on 4/32 devices what you can do now.

2) OpenWrt support for this device has ended in 2022.
19.07.10 was the last official build for 4/32 devices.

Also known as: Arcor-Easy Box A 800 WLAN ISDN.

Install OpenWrt (generic explanation)

FIXME Please add the installation procedure here.

Power supply external PSU, 15V DC, 1.2A (18W max)
1         6  
2 - RX    7
3 - TX    8
4         9
5 - GND   10 - 3,3V

Pin 1 is marked with an small arrow on the motherboard, speed is 115200 8N1

|    Area            Address      Length   | 
| [0] Boot            0xB0000000     128K  |
| [1] Configuration   0xB0020000     256K  |
| [2] Special Area    0xB0060000      64K  |
| [3] Code Image      0xB0070000    3584K  |
| [4] Boot Params     0xB03F0000      64K  |
| [5] Flash Image     0xB0000000    4096K  |

After connect and power on the device you should see something like this:

[root@localhost]# screen /dev/ttyUSB0 115200 ROM VER: 1.0.3 CFG 01 Read EEPROMX X ======================================================================== Wireless ADSL Gateway DANUBE Loader V1.00.01 build Sep 24 2008 10:11:06 Arcadyan Technology Corporation ======================================================================== MXIC MX29LV640BB bottom boot 16-bit mode found Copying boot params.....DONE Press Space Bar 3 times to enter command mode ...123 Yes, Enter command mode ... [DANUBE Boot]:

uploading u-boot (ramboot)

Download uboot bin:

  • You need to connect to serial port 1
  • Access BRN bootloader (press spacebar three times when required to do)
  • press ! to enter admin mode
  • load uboot.bin at 0xa0400000 (M a0400000)
  • go 0xa0400000 (Y a0400000)

writing u-boot to flash

  • unprotect the sector where the U-BOOT config is being stored.

protect off 0xb0010000 0xb001FFFF

  • erase the flash

erase 0xb0000000 0xb001FFFF

  • write the uploaded u-boot.bin to flash (here; 0x80500000 is the RAM adress, where i've uploaded my file)

cp.b 0x80500000 0xb0000000 10000

  • protect the config sector

protect on 0xb0010000 0xb001FFFF

  • reboot.
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  • Last modified: 2024/02/12 08:58
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