Flashing BCM63136 RTV1907VWC3

Hello,
I have this router almost bricked (only CFE access) but I'm still able to upload a new image via CFE.
I don't have any original firmware working in this "recovering mode" just the bootlog:

CFE version 1.0.38-118.3 for BCM963138 (32bit,SP,LE)
Build Date: Tue Nov  1 23:00:13 CST 2016 (charles@charles-All-Series)
Copyright (C) 2000-2015 Broadcom Corporation.
Bootloader version: CFEROM : 2.5.2Nr1820             CFERAM : 2.5.2Nr1820

Boot Strap Register:  0x7dfffc2f
Chip ID: BCM63136B0, ARM Cortex A9 Dual Core: 1000MHz
Total Memory: 536870912 bytes (512MB)
NAND ECC BCH-4, page size 0x800 bytes, spare size used 64 bytes

NAND flash device: , id 0xc2dc block 128KB size 524288KB
pmc_init:PMC using DQM mode
Board IP address                  : 192.168.1.1:ffffff00
Host IP address                   : 192.168.1.100
Gateway IP address                :
Run from flash/host/tftp (f/h/c)  : f
Default host run file name        : vmlinux
Default host flash file name      : bcm963xx_fs_kernel
Boot delay (0-9 seconds)          : 1
Boot image (0=latest, 1=previous) : 0
Default host ramdisk file name    :
Default ramdisk store address     :
Board Id (0-31)                   : RTV1907VWC3
Number of MAC Addresses (1-32)    : 16
Base MAC Address                  : 
PSI Size (1-128) KBytes           : 48
Enable Backup PSI [0|1]           : 0
System Log Size (0-256) KBytes    : 0
Auxillary File System Size Percent: 0
MC memory allocation (MB)         : 4
TM memory allocation (MB)         : 44
DHD 0 memory allocation (MB)      : 14
DHD 1 memory allocation (MB)      : 0
DHD 2 memory allocation (MB)      : 0
WLan Feature                      : 0x00
Voice Board Configuration (0-1)   : LE9642_ZSI_BB
Partition 1 Size (MB)             : 8M
Partition 2 Size (MB)             : 1M
Partition 3 Size (MB)             : 4M
Partition 4 Size (MB) (Data)      : 4M

If I try to flash an image from:
https://downloads.openwrt.org/releases/18.06.2/targets/brcm63xx/generic/
I get:

Finished loading 3276804 bytes
Illegal whole flash image
Finished flashing image.

If I try to flash this image:
https://sourceforge.net/projects/asuswrt-merlin/files/RT-AC86U/Release/RT-AC86U_384.9_0.zip/download
I get:

Finished loading 84935700 bytes
Chip Id error.  Image Chip Id = 4908, Board Chip Id = 63136.
Finished flashing image.

That is more encouraging but still not able to flash it.
Anyone know if there is any firmware that support this chipset?

Thank you for any hint.

Can you please identify your device on the Table of Hardware?

I can't identify my device because there isn't any entry in the table of hardware that match with this router:

This means your device is not supported by OpenWrt.