The EasyBox 904 LTE is a 4G WiFi router, with a tiny 3 inch display, which has a 2.4 GHz and a 5 GHz WiFi interface, four 1G LAN ports, an ISDN RJ45 port, a 4 pin terminal also for use with ISDN and 3 TAE ports. Also there are 2 covered SMA ports for external LTE antenna, a covered SIM slot and two USB 2.0 ports (one also covered). Under the hood it has a Mini-PCIe slot, which is used for a QUANTA 1KG2 LTE modem, also connected to the SMA ports and onboard antennas. At least you can find a serial port at J8, next to the VIA VT6212L, which starts listening to 115200 baud (8N1).
For some people it might be a big surprise, but if you look at the firmware of the device (e.g. UEfullimage_AT904L-03.18.bin), it introduces itself as OpenWrt Backfire 10.03.1-RC5 as of /etc/openwrt_version and /etc/openwrt_release in the squashfs_root. Anyway, at first glance, it doesn't primarily rely on uci, but they are using ccfg_cli and a simplified Web-UI to make the “voodoo” work.
→ port.serial general information about the serial port, serial port cable, etc.
How to connect to the Serial Port of this specific device: After removing the cover (release 4 screws on the backside), you will find the serial port at J8 on the PCB, next to the VIA VT6212L.
WARNING! Use at your own risk.
|PIN 1||PIN 2||PIN 3||PIN 4|
| Serial connection parameters|
for EasyBox 904 LTE
ROM VER: 1.1.4 CFG 06 NAND NAND Read OK ROM VER: 1.1.4 CFG 06 NAND NAND Read OK nand_read_page - 00000008 DDR autotuning Rev 0.3c DDR size from 0xa0000000 - 0xa7ffffff DDR check ok... start booting... U-Boot 2010.06-Lv2.0.40-A0.3 (Jul 12 2012 - 22:00:12) CLOCK CPU 500M RAM 250M DRAM: 128 MiB NAND: NAND device: Manufacturer ID: 0xec, Chip ID: 0xdc (Samsung NAND 512MiB 3,3V 8-bit) 512 MiB Bad block table found at page 262080, version 0x01 Bad block table found at page 262016, version 0x01 nand_read_bbt: Bad block at 0x000006b20000 nand_read_bbt: Bad block at 0x0000154c0000 nand_read_bbt: Bad block at 0x00001b860000 nand_read_bbt: Bad block at 0x00001dba0000 In: serial Out: serial Err: serial Net: Internal phy(GE) firmware version: 0x040b vr9 Switch Type "run flash_nfs" to mount root filesystem over NFS Hit any key to stop autoboot: 0 Uncompressing LCD bootup images ............... NAND read: device 0 offset 0x0000000004700000, size 0x0000000000300000 0x300000 bytes read: OK 1. bootid : 0, bootnum : 2 Erasing at 0x4560000 -- 100% complete. done 2. bootid : 0, bootnum : 3 NAND read: device 0 offset 0x0000000001e40000, size 0x0000000000400000 0x400000 bytes read: OK ## Booting kernel from Legacy Image at 80800000 ... Image Name: MIPS LTQCPE Linux-188.8.131.52 Created: 2015-02-05 3:27:17 UTC Image Type: MIPS Linux Kernel Image (lzma compressed) Data Size: 1441728 Bytes = 1.4 MiB Load Address: 80002000 Entry Point: 800061b0 Verifying Checksum ... OK Uncompressing Kernel Image ... OK Starting kernel ... Lantiq xDSL CPE VR9 mips_hpt_frequency = 250000000, counter_resolution = 2