In my experience, the "load_helper" command is necessary on certain types of switches that use a multistage process of booting - first a helper image is loaded. This helper image is not a full IOS but it is smarter and has more features than the bootloader code in the ROM. This helper image in turn loads the final full IOS image.
On 2950/2960, 3550/3560 Catalyst switches, the helper image is actually not used at all, and this command does nothing - but the command was indeed there. However, if it is not available anymore on your switch then perhaps your ROM bootloader is newer and the unnecessary "load_helper" command has been removed, just the documentation was not updated.
The bottom line is, you can skip it which you obviously did :)
To be honest, I wish a SME from the LAN Switching BU was around to answer this question. I tried to find any example of a scenario where the load_helper command actually had an effect but I was not successful. The older documentation only says that this command can be used to load an additional image that patches or extends the functionality of the boot loader. I was not able to find any working example, though. Sorry about that.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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