I have HG556a Version C, before it run Chaos Calmer 15.05, I upgrade it to OpenWRT v18.06.2 and I cannot find the wireless menu, then I upgrate to v.19.07.7, in this version i can find the wireless menu. But somehow I cannot find the SSID of my HG556a from other device, I also try to find wireless network in Wireless Menu, but it show nothing.
I have been read the "https://openwrt.org/toh/huawei/hg556a" , and follow the instruction on section "https://openwrt.org/toh/huawei/hg556a#restore_cal_data_partition", but somehow when I type command "dd if=/etc/cal_data_HG556_C.bin of=/dev/mtd5".
It return the following error:
"dd: writing '/dev/mtd5': I/O error"
"241+0 records in"
"240+0 records out"
can anyone help me to find solution please?