New B315s-936, B315s-22 firmware is available from Huawei support: The file 2017-01-10 43.37 MB, filename is indicating is the right one. Direct download link (if working): Interesting, this is firmware number 21.321.03.00.00, the last section is '00' - generic instead of '1232' - generic for South Africa (like all our routers from Cell C). If it accept flashing it should be fine. There is a long list of fixes to the open source components: Linux kernel, Samba, Openssl, Portable UPnP, iptables, CUPS, WiFi.
No changes to the features on the list, but Web searching brings something about added VPN.
Huawei B315 is a new 4G LTE CPE with LTE Category 4 technology. Huawei B315 could achieve LTE connection of up to 150Mbps through its Gigabit Ethernet port. There are four Ethernet ports for LAN/WAN. It also features a USB 2.0 port for HDD, flash drives, network storage devices and printers.
The B315 LTE CPE could cover smoother wireless network for 250 meters. Even after a successful upgrade, you can easily restore software to the previous version. Simply hold the WPS and Power buttons for a seamless rollback. With the LTE CPE B315, the brother model Huawei B310 LTE CPE is also presented with less LAN ports and no USB port.