Welcome again. In this thread I found a lot of interesting information that I shared on the Russian forum. I also described how to unlock the bootloader in a more friendly way, step by step. I wanted to share my description with you.
Connect the USB adapter with SFP connector to the module. Start the TeraTerm program and set the serial port parameters: drivers, speed, COM port, (115200 8N1).
This is what a locked bootloader looks like.
ROM: V1.1.4
ROM: CFG 0x00000006
ROM: SFLASH-4
hw fuse format 1
U-Boot 2011.12-lantiq-gpon-1.2.24 (Nov 03 2014 - 22:46:28), Build: falcon_sfp_linux
Board: SFP
DRAM: 64 MiB
Now running in RAM - U-Boot at: 83fc8000
SF: Detected S25FL129P_64K with page size 64 KiB, total 16 MiB
Create a temporary connection between contacts 4 and 5 of the flash memory and switch the module back on.
Type 7 at the prompt and send 1224ABORT.bin file to the flash. (Modified file u-boot.bin is located a couple of posts above)
TeraTerm File->Transfer->XMODEM->Send 1224ABORT.bin
ROM: V1.1.4
ROM: CFG 0x00000006
ROM: SFLASH-4
ROM: CFG 0x00000006
ROM: SFLASH-4
ROM: CFG 0x00000006
ROM: SFLASH-4
ROM: Boot? (0-9A-F<CR>) 7
ROM: CFG 0x00000007
ROM: XMODEM
CCCCCCCCCCCCCC
When the 1224BORT.BIN file transfer is complete, press Ctrl-C to get this prompt.
FALCON =>
Enter these variables to keep the bootloader unlocked permanently.
FALCON => setenv bootdelay 5
FALCON => setenv asc 0
FALCON => setenv preboot "gpio input 105;gpio input 106;gpio input 107;gpio input 108;gpio set 3;gpio set 109;gpio set 110;gpio clear 423;gpio clear 422;gpio clear 325;gpio clear 402;gpio clear 424"
FALCON => saveenv
Restart the module.
This is what a unlocked bootloader looks like.
ROM: V1.1.4
ROM: CFG 0x00000006
ROM: SFLASH-4
hw fuse format 1
U-Boot 2011.12-lantiq-gpon-1.2.24 (Nov 03 2014 - 22:46:28), Build: falcon_sfp_linux
Board: SFP
DRAM: 64 MiB
Now running in RAM - U-Boot at: 83fc8000
SF: Detected W25Q128 with page size 4 KiB, total 16 MiB
Chip: FALCON-S (A22)
Bootmode: 0x06
Reset cause: Power-On Reset
CPU Clock: 400 MHz
Net: SGMII, SERDES [PRIME]
gpio: pin 105 (gpio 105) value is 0
gpio: pin 106 (gpio 106) value is 0
gpio: pin 107 (gpio 107) value is 0
gpio: pin 108 (gpio 108) value is 1
gpio: pin 3 (gpio 3) value is 1
gpio: pin 109 (gpio 109) value is 1
gpio: pin 110 (gpio 110) value is 1
gpio: pin 423 (gpio 423) value is 0
gpio: pin 422 (gpio 422) value is 0
gpio: pin 325 (gpio 325) value is 0
gpio: pin 402 (gpio 402) value is 0
gpio: pin 424 (gpio 424) value is 0
Press SPACE to delay and Ctrl-C to abort autoboot in 5 seconds
Now you can upload mtd2 image0 with full shell (The file is located a couple of posts above)
FALCON => loadb 0x80800000
## Ready for binary (kermit) download to 0x80800000 at 115200 bps...
TeraTerm File->Transfer->Kermit->Send MA5671Amod.bin
File transfer will take about 25 minutes.
Last step. Move the file from memory to flash.
FALCON => sf probe 0
FALCON => sf erase C0000 740000
FALCON => sf write 80800000 C0000 740000
The module should have two images on the flash: active(0) at 0xC0000 and standby(1) at 0x800000
If standby is also present, image1_is_valid=1
FALCON => printenv image1_is_valid
image1_is_valid=1
FALCON =>
Make sure the active one is 0
FALCON => printenv committed_image
committed_image=0
FALCON =>
When finished, insert the module into the router and log in at 192.168.1.10