Hello. This can look like the tipical error that happens when you update the 3ds whitout upgrading the cartrigde's firmware, but it isn't! I had a r4i-sdhc 3ds in a 3ds with version 4.4. It was working fine, but i decided to upgrade the cartidge (not the 3ds) to v4.5 or higher (following this tip with kernel v1.66b and 1.67b) and now when I put the flash card on the 3ds, the 3ds shows the famous error that says "An error has ocurred". This normaly happens when console's version is higher than the version supported by the cartidge, but cartridge is now at v5.0 and console is still at v4.4... The cartridge keeps working in a dsi with v1.4.3, but not in the 3ds... What's the problem here? What can I do to solve the problem? Can the r4i-sdhc cartridge be downgraded to v4.4? Thanks!