82001537_G.bin and 82001532_K1 are different firmwares for different products (or perhaps different variants of similar products). We can determine this because the numbers (82001537 vs. 82001532) are different. If this was the same firmware for the same product, but a different version, the only thing different would be the letter (revision) at the end.
It looks like the latest revision for 82001532 is N3 (filename 82001532_N3.bin).
Here's the download link, if you want to apply it to your unit and see if that helps:
Before updating the firmware,, make sure your POST is up-to-date. You should see the POST version in the Firmware Update section of the Web UI. It should either be 82001537_x or 82001753_x (where x is a letter). If it's 82001537_G or 82001753_K then you're good-to-go, otherwise if it's older (a lower letter) then update it first, using the appropriate file below (whatever number matches).
Although I don't think it's required, if you update the POST, go ahead and reboot the unit afterwards, before updating the firmware (EOS).
I hope this all makes sense!