We need help to upgrade the AC6605's firmware. Currently, it is in version V200R007C20SPC300, and we would like to upgrade the version to V200R019C00SPC500. However, there is no space available on the system to load the new 85 MB firmware. We would not like to upgrade via USB, therefore, We'd like to delete some files that are unnecessarily occupying disk space. We have already deleted all the .bin files responsible for upgrading the APs, however, it still needs to release about 40 MB space. Is there any advice?
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