In addition to firmware, you can also update the , which is the management software that appears when you plug the modem into a PC. Archives for the Go to product viewer dialog for this item.
: Provides a consolidated list of firmware links for the E352 and related models, often tailored to specific mobile operators. Installation Steps (Manual Update)
You can find firmware files for various regional operators (like T-Mobile or Norway Netcom) on the following platforms: