D-Link DIR-620 rev C1

This device shares the same board as the D-Link DIR-615 rev K2,
 * but the USB portion is populated on this model.

This device is presumably sold mainly (only?) in Russia and Ukraine.

Support firmware by Vampik FW: DIR620C1-3.0.5-r5010M
 * Simple flash from web interface of D-Link stock firmware.

See also D-Link DIR-620..

Console dumps
$ cat /proc/mtd dev:   size   erasesize  name mtd0: 00020000 00010000 "boot" mtd1: 007c0000 00010000 "Linux" mtd2: 0068137c 00010000 "rootfs" mtd3: 00010000 00010000 "rgdb" mtd4: 00010000 00010000 "nvram" mtd5: 00800000 00010000 "all"

after flash Oleg`s firmware root]$ cat /proc/mtd dev:   size   erasesize  name mtd0: 00020000 00010000 "boot" mtd1: 007d0000 00010000 "linux" mtd2: 006c6588 00010000 "rootfs" mtd3: 00010000 00010000 "nvram" mtd4: 00240000 00010000 "flashfs" and cpuinfo root]$ cat /proc/cpuinfo system type            : Broadcom BCM5357 chip rev 2 pkg 8 processor              : 0 cpu model              : MIPS 74K V4.9 BogoMIPS               : 264.19 wait instruction       : no microsecond timers      : yes tlb_entries            : 64 extra interrupt vector : no hardware watchpoint     : yes ASEs implemented       : mips16 dsp shadow register sets   : 1 VCED exceptions        : not available VCEI exceptions        : not available frequency 530Mhz $ nvram show | grep clkfreq size: 17883 bytes (14885 left) clkfreq=530,176,88