Cisco Business 350 MCU upgrade frozen

[ErikRevaj6335]

Hello, I encountered a problem with Cisco 350-48P-4G. After unpacking it from the box, and updating a firmware to 3.2.0.84 from web, it rebooted and stucked at booting. When I connect with console cable and see this: 

*****************************************************************
*** Running SW Ver. 3.0.0.61 Date Jun 18 2020 Time 20:32:00 ***
*****************************************************************

HW version is V01
Serial Number is PSZ24301KWM
Base Mac address is: 70:f0:96:40:f7:ed
Dram size is : 512M bytes
Flash size is: 256M
18-Jun-2020 08:33:12 %CDB-I-LOADCONFIG: Loading running configuration.
18-Jun-2020 08:33:12 %CDB-I-LOADCONFIG: Loading startup configuration.
Device configuration:
Slot 1 - CBS350-48P-4G
Device 0: CPSS_98DXM336 (PonCat-3 GE)
Device 1: CPSS_98DXM336 (PonCat-3 GE)
FPGA version is: 2402
MCU version is: 0x00
CPU speed: 800 MHz
Coredump mode 1 (disabled)

------------------------------------
-- Unit Factory Default --
------------------------------------

18-Jun-2020 08:36:00 %Box-W-I2C-FAILURE-WRITE: I2C failed to write information to device at address 0x11 on bus 0 offset 0x0b, component Erhai FPGA
MCU firmware upgrade. Please DO NOT power off or reboot the device during MCU firmware upgrade.
This might take few minutes.

I also tried turning it off and on and resetting to factory settings but none of it helps. What could be the problem ? Thanks

[marce1000 · Accepted solution]

 - You need to engage Cisco on this : https://www.cisco.com/c/en/us/support/web/tsd-cisco-small-business-support-center-contacts.html , or it could be that the device needs to be replaced. As with this part of the error ..>...component Erhai FPGA. It points to the hardware : FPGA's  re-configurable logic circuits that allow a developer to create circuits with very specific and dedicated functions. So it looks like a hardware problem, 

 M.