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Topic: TP-Link WR840N (US) V 4.0 Bricked

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Hello everyone. I tried to install OpenWRT on my brand new router and it went wrong. I updated the UI of the original system. Here is the u-boot log:

U-Boot 1.1.3 (Oct 11 2016 - 08:49:28)

Board: Ralink APSoC DRAM:  64 MB
relocate_code Pointer at: 83fb8000
******************************
Software System Reset Occurred
******************************
gpiomode2 05540554.
gpiomode2 00000000.
gpiomode2 05550555.
flash manufacture id: ef, device id 40 17
find flash: W25Q64BV
============================================
Ralink UBoot Version: 4.3.0.0
--------------------------------------------
ASIC 7628_MP (Port5<->None)
DRAM component: 512 Mbits DDR, width 16
DRAM bus: 16 bit
Total memory: 64 MBytes
Flash component: SPI Flash
Date:Oct 11 2016  Time:08:49:28
============================================
icache: sets:512, ways:4, linesz:32 ,total:65536
dcache: sets:256, ways:4, linesz:32 ,total:32768

##### The CPU freq = 575 MHZ ####
estimate memory size =64 Mbytes
RESET MT7628 PHY!!!!!!
continue to starting system.                                                  0
disable switch phyport...

3: System Boot system code via Flash.(0xbc020000)
do_bootm:argc=2, addr=0xbc020000
## Booting image at bc020000 ...
   Uncompressing Kernel Image ... LZMA ERROR 1 - must RESET board to recover
[04020C0E][04020D08]
DDR Calibration DQS reg = 00008988


And when I try to put a firmware via TFTP gives this (even being the original firmware):


TIMEOUT_COUNT=10,Load address: 0x80060000
Loading: T checksum bad


A cordial hugs to all.

@wspock
Did you manage to unbrick your WR840N (US)?

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