Show pagesourceOld revisionsBacklinksBack to top × Table of Contents Petatel PSR-680W Supported Versions Hardware Highlights Installation Obtaining Firmware Installation Flash Layout Upgrading OpenWrt Basic configuration Specific Configuration Interfaces Buttons Hardware Info Serial Tags Petatel PSR-680W 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. Wireless CDMA 450 MHz Router Supported Versions BrandModelVersionCurrent ReleaseOEM InfoForum TopicTechnical DataPetatelPSR-680W19.07.2View/Edit data Hardware Highlights ModelVersionSoCCPU MHzFlash MBRAM MBWLAN HardwareWLAN2.4WLAN5.0100M portsGbit portsModemUSBPSR-680WRalink RT3052450432Ralink RT3052b/g/n-5EVDO Rev.A- CPU Ram Flash Internet WiFi Ethernet USB Serial JTag RUIM card Ralink RT3052 32MiB 4MiB EV-DO Rev.A 450MHz 11 bgn 4 x 1 No Yes No Yes Installation ModelVersionCurrent ReleaseFirmware OpenWrt InstallFirmware OpenWrt UpgradeFirmware OEM StockPSR-680W19.07.2https://downloads.openwrt.org/releases/19.07.2/targets/ramips/rt305x/openwrt-19.07.2-ramips-rt305x-psr-680w-squashfs-sysupgrade.bin Obtaining Firmware Specific Howtos → downloads → toolchain Firmware image is obtained by compiling source from the latest development branch (trunk) If you use LuCI, you may want to install following packages before compiling ./scripts/feeds install luci ./scripts/feeds install luci-proto-ppp ./scripts/feeds install luci-proto-3g When performing “make menuconfig” select CONFIG_TARGET_ramips=y CONFIG_TARGET_ramips_rt305x=y CONFIG_PACKAGE_kmod-usb-acm=y If you use LuCI, additionally select CONFIG_PACKAGE_luci=y CONFIG_PACKAGE_luci-proto-3g=y To install OpenWrt for the first time on a router with factory firmware you will need OpenWrt image in the standard “uImage” format. To compile such image, when performing “make menuconfig” select Target Images - ramdisk CONFIG_TARGET_ROOTFS_INITRAMFS=y After OpenWrt is successfully installed, it is recommended to perform sysupgrade to squashfs firmware. To compile such image, when performing “make menuconfig” select Target Images - squashfs CONFIG_TARGET_ROOTFS_SQUASHFS=y Installation Specific Howtos → Install OpenWrt → generic.flashing.tftp In PSR-680W factory firmware the bootloader menu is disabled. Fortunately, bootloader contains TFTP client which is enabled by default and can be used for firmware upload. The bootloader TFTP client expects firmware in the standard “uImage” format with file name “rt305x_image.bin”. Install TFTP server software on your PC, and give your PC static IP address 192.168.10.4 with network mask 255.255.255.0 Make sure the firmware file is “uImage” type, is renamed to rt305x_image.bin, and is located in the directory which TFTP server uses to upload files. Connect your PC with the router using Ethernet cable. Power cycle the router. You may have to repeat power off-on cycle several times till you see that file transfer is actually taking place. Flash Layout PSR-680W with OpenWrt firmware installed has following flash layout: 6 cmdlinepart partitions found on MTD device physmap-flash.0 Creating 6 MTD partitions on "physmap-flash.0": 0x000000000000-0x000000030000 : "u-boot" 0x000000030000-0x000000040000 : "u-boot-env" 0x000000040000-0x000000050000 : "factory" 0x000000050000-0x000000130000 : "kernel" 0x000000130000-0x000000400000 : "rootfs" mtd: partition "rootfs" set to be root filesystem mtd: partition "rootfs_data" created automatically, ofs=2F0000, len=110000 0x0000002f0000-0x000000400000 : "rootfs_data" 0x000000050000-0x000000400000 : "firmware" Upgrading OpenWrt → generic.sysupgrade If you have already installed OpenWrt and like to reflash for e.g. upgrading to a new OpenWrt version you can upgrade using the mtd command line tool. It is important that you put the firmware image into the ramdisk (/tmp) before you start flashing. LuCI Web Upgrade Process Browse to http://192.168.1.1/cgi-bin/luci/mini/system/upgrade/ LuCI Upgrade URL Upload image file for sysupgrade to LuCI Wait for reboot Terminal Upgrade Process Login as root via SSH on 192.168.1.1 Use the following commands to upgrade. cd /tmp/ wget http://downloads.openwrt.org/snapshots/trunk/XXX/xxx.abc sysupgrade /tmp/xxx.abc Basic configuration → Basic configuration After flashing, proceed with this. Set up your Internet connection, configure wireless, configure USB port, etc. Specific Configuration Interfaces When OpenWrt is installed, by default there is no network interface for CDMA and Wi-Fi is disabled. To add CDMA interface using LuCI: Go to Network - Interfaces - Add new interface... On the General Setup tab select: Protocol UMTS/GPRS/EV-DO Modem device /dev/ttyACM0 Service Type EV-DO PAP/CHAP username Provided by your network operator PAP/CHAP password Provided by your network operator On the Firewall Settings tab select “wan”. Resulting configuration may look like this: network.CDMA=interface network.CDMA.proto=3g network.CDMA.device=/dev/ttyACM0 network.CDMA.service=evdo network.CDMA.username=mobile network.CDMA.password=internet To enable Wi-Fi using LuCI: Go to Network - Wifi and press Enable. Buttons → hardware.button on howto use and configure the hardware button(s). The Petatel PSR-680W has one “Reset” button at the bottom. Here, we merely name the button, so we can use it in the above Howto: BUTTON Event Reset reset Hardware Info Architecture: Ralink bootloader: U-Boot System-On-Chip: Ralink RT3052 SoC Flash-Chip: NOR SAMSUNG K8P3215UQB Flash size: 4 MiB RAM: 32 MiB Wireless: 2.4GHz 802.11bgn Ethernet: 1 WAN port and 4 LAN ports 10/100Mbps Internet: EVDO Rev.A 450 MHz (Internal Qualcomm MSM6800A mini PCI express module) USB: No Serial: Yes JTAG: No Serial → port.serial general information about the serial port, serial port cable, etc. How to connect to the Serial Port of this specific device: Serial console is the 4-pin header on the upper side of the board marked as “J10”. Device case should be opened to access the pins. The pins are marked as “GND, RX, TX, 3.3V”. Actually, the pins are GND, TX, RX, V3.3 (TX pin sending signal from the router to the PC). The voltage is 3.3V TTL. Baud rate is 115200. On device side, there are two serial ports which show up as following device nodes: /dev/ttyS0 (UARTF) is used for communication with CDMA module using vendor-specific AT commands. /dev/ttyS1 (UARTL) is used for the console. Tags For some Help with the Tags, please have a look here: tags ramips, rt3052, FastEthernet, 5Port, DetachableAntenna, 4Flash, 32RAM, MIPS, 802.11bgn, Serial, 4Ant This website uses cookies. By using the website, you agree with storing cookies on your computer. Also you acknowledge that you have read and understand our Privacy Policy. If you do not agree leave the website.OKMore information about cookies ramips rt3052 fastethernet 5port detachableantenna 4Flash 32RAM mips 802.11bgn serial 4ant Last modified: 2021/10/15 05:06by bobafetthotmail