Dear Community, 

During firmware update, I've installed wrong version and now my extender is not booting, it is restarting. I connected via serial interfaces and following is the output of my serial. 

This is repeatedly printing. I'm not able to select other options to install new firmware. I'll be appreciated if you can help me to fix the issue. 

U-Boot 1.1.3 (Apr 16 2021 - 16:46:57)

Board: Ralink APSoC DRAM:  64 MB
relocate_code Pointer at: 83fb8000
******************************
Software System Reset Occurred
******************************
flash manufacture id: 1c, device id 70 17
Warning: un-recognized chip ID, please update bootloader!
*** Warning - bad CRC, using default environment

============================================
Ralink UBoot Version: 5.0.0.0
--------------------------------------------
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:Apr 16 2021  Time:16:46:57
============================================
icache: sets:512, ways:4, linesz:32 ,total:65536
dcache: sets:256, ways:4, linesz:32 ,total:32768

 ##### The CPU freq = 580 MHZ ####
 estimate memory size =64 Mbytes
RESET MT7628 PHY!!!!!!

Please choose the operation:
   1: Load system code to SDRAM via TFTP.
   2: Load system code then write to Flash via TFTP.
   3: Boot system code via Flash (default).
   4: Entr boot command line interface.
   7: Load Boot Loader code then write to Flash via Serial.
   9: Load Boot Loader code then write to Flash via TFTP.
default: 3

You choosed 3

 0

3: System Boot system code via Flash.
tplink_turn_off_led
## Booting image at bc020000 ...
text base: ffffffff
entry point: ffffffff
   Uncompressing Kernel Image ... LZMA ERROR 1 - must RESET board to recover
cid reg:00010102, cid:1[05020B0D][05020C0C]
DDR Calibration DQS reg = 00008B87

DDR Calibration MEMCTRL reg = 0E120003