Core for M3i Zero only16-5-2011) Heres the M3izero core dat update file which enables you to use this cart after updating to 1.42. Download http://down.gbalpha.com/GBalpha/Softwares/F_CORE_v1.8.2.zip Core for M3i Zero only16-5-2011) M3i Zero Core data file V1.8.2 1.Supports M3i Zero Model:GMP-Z003 & old Models; 2.Supports 3DS Japanese firmware Ver. 1.1.0-1J; Supports 3DS USA firmware Ver. 1.1.0-1U; Supports 3DS European firmware Ver. 1.1.0-1E; Supports iDSi Chinese firmware V1.4.2C; Supports NDSi/NDSi LL Japanese firmware V1.4.2J; Supports NDSi/NDSi XL American firmware V1.4.2U; Supports NDSi/NDSi XL European firmware V1.4.2E. 1. All machines are upgradable: even your machine has already been in firmware 1.4.2. And no need to find another bootable machine to perform the upgrading process. 2. risk-free: flash card will not be damaged even the upgrading process is not successfully. 3. fast and easy to update just plug in the "programming cable" and wait for about 30sec.