The upgrading method for the old version R4i gold & failed upgrading cards
The R4i gold 3DS version can use directly on 3DS 2.0 no need update.
If your upgrading failed card is 3DS, you could download the 3DS V2.0.0-2 Patch software for R4 from ftp://r4idsdown:firstname.lastname@example.org/3DS20_Patch_R4iGold_3DS.rar， Then you could choose the 3DS20_Patch_R4iGold_3DS_NDSL.nds. to repair.
If your failed upgrading card is not 3DS, you could download the software of 3DS20_Patch_R4iGold_Non3Dfrom: ftp://r4idsdown:email@example.com/3DS20_Patch_R4iGold_Non3DS.rar. Then choosing the 3DS20_Patch_R4iGold_Non3DS_NDSL.nds to repair.
Firstly you need a NDS Lite console and another workable R4i gold(from http://www.r4ids.cn/) .
2. You could copy the right 3DS V2.0.0-2 Patch software to the MicroSD card! Then you could insert the micro SD card into the R4i gold. After that inserting the R4i gold into the NDS Lite console. You could enter the wood R4 root.
3. You could find the 3DS20_Patch. ( upgrading failed card is 3DS, choose the 3DS20_Patch_R4iGold_3DS_NDSL.nds. to repair, failed upgrading card is not 3DS, choosing the 3DS20_Patch_R4iGold_Non3DS_NDSL.nds to repair. )
4. Pressing A button could enter the upgrading. （Reminding: Don’t press A any more after entering the upragding）.
5. Then taking out the R4i gold，
6. Taking out the Mirco SD card & then insering into the failed upgrading R4i gold. Then you could enter them again into the NDS Lite console.
7. Pressing A under the upgrading page（During the upgrade process, you must keep enough power . Don’t turn off the console.）
8. You could re-start the console when the screen shows upgrading successfully. Then your R4i gold has been upgraded into 3DS 2.0 already.