Recover from uboot interface on M4300-52G GSM4352S

When setting up a set of stacked network switches, one switch hung and did not reboot correctly.  Upon inspection of the console port the switch seems to be sitting at a uboot interface as shown:

m4300r2> reset
resetting M4352S board...

U-Boot 2012.10-00258-g1c5018dfe9 (Jul 26 2019 - 11:17:57)VerNo=1.0.0.15

/image2 not found!
ubifsload - load file from an UBIFS filesystem

Usage:
ubifsload <addr> <filename> [bytes]
- load file 'filename' to address 'addr'
Wrong Image Format for bootm command
ERROR: can't get kernel image!
Saving Environment to SPI Flash...
/image1 not found!
ubifsload - load file from an UBIFS filesystem

Usage:
ubifsload <addr> <filename> [bytes]
- load file 'filename' to address 'addr'
Wrong Image Format for bootm command
ERROR: can't get kernel image!
Saving Environment to SPI Flash...
/image2 not found!
ubifsload - load file from an UBIFS filesystem

Usage:
ubifsload <addr> <filename> [bytes]
- load file 'filename' to address 'addr'
Wrong Image Format for bootm command
ERROR: can't get kernel image!
ETH LINK UP: 1000FD
BOOTP broadcast 1
m4300r2> <INTERRUPT>
m4300r2>

I have placed a firmware image 

m4300v12.0.17.13.stk  on a tftp server as image1

I then had some success with the command

m4300r2> dhcp 0x62000000 <tftp_server_ip>:image1

That loaded the image successfully.

I then validate the image:

m4300r2> validate
Validating image
STK file size 44081737
STK validation Success

Set image1 as the bootfile

m4300r2> setenv bootfile image1

Then reset:

m4300r2> reset
resetting M4352S board...

U-Boot 2012.10-00258-g1c5018dfe9 (Jul 26 2019 - 11:17:57)VerNo=1.0.0.15

/image2 not found!
ubifsload - load file from an UBIFS filesystem

Usage:
ubifsload <addr> <filename> [bytes]
- load file 'filename' to address 'addr'
+ + Uncompressing Kernel Image ... Checking for application
code file image2 not present.
booting image1
Extracting application from .stk file...sh: open: unknown operand
Failed!
Failed to start Operational code, trying other image image2
Operational code not executed!

But still fail to load into a working image.  I feel as though I am missing a step.  Can anyone share any guidance on what might be causing the "Extracting application from .stk file...sh: open: unknown operand" or any other troubleshooting advice?

Thanks!