Well thanks for this
guide, I know have 2023 maps
I updated from 0425 to 0480 with no issues, it came up with some note about a code. I just left it and it rebooted fine.
I downloaded the P106_N60S3MIBS2_EU_NT (8V0060866S).7z from
https://mibsolution.one/#/1. Extracted it to my HDD. I then removed a few files in the markets/eu/map/MapRegions folder. Ukraine and turkey stuff if I remember correctly, this made the files fit on the original card. Modified the DbInfo.txt by copying the original one from my map car and changing the last 2 lines to
ApplicationSoftwareVersionNumber="0106"
SystemName=" ECE 2023 "
from the new map file.
I then copied the contents of the original card to my HDD.
I then formatted the original card to fat32, and copied over the new files, put the card in the car and waited for what seemed like hours. It now works.
Thanks