You can find the flash files and tools on these reputable GSM archive sites:
Are you trying to or just seeking to upgrade the software version? Nokia XL RM-1030 Stock Firmware ROM (Flash File)
Hosts various regional firmware versions (IMEA, EURO, APAC).
If the product code contains a "W" , you have a V2 chipset. Version V1: Older models without the "W" are V1.
A lightweight utility specifically for Nokia Android-based phones that is easier to use than official suites.