Reference URL
https://kynex.ovh/patching-the-timebomb-in-an-r4-flashcart.html
This only applies to cartridges from 2014 and later.
Firmware
The two are basically the same.
They just have a check key at 0x3000 ~ 0x3083 to prevent other kernels from running.
Due to this check key, R4ISDHC card cannot run 1.85 kernel of R4I-SDHC.
Conversely, r4i-sdhc cards cannot run 4.0 kernel of r4isdhc.
Of course, you can swap firmware or use a timebomb removed kernel.
Kernel
The key difference between the 1.85 and 4.0 kernels is in the map.bin file.
The 4.0 kernel can run Pokemon White 1-2 and Black 1-2, while 1.85 cannot.
Security bypass is related to the map.bin file and is linked to the r4.dat file.
I tried using the reference URL.
4.0 kernel was also able to bypass timebomb and verification, but it fails to drive Pokemon because the map.bin file is not properly linked.
There is no encryption in the kernel itself, but I gave up trying to analyze it due to encryption on the text and its complex structure.
https://kynex.ovh/patching-the-timebomb-in-an-r4-flashcart.html
This only applies to cartridges from 2014 and later.
Firmware
The two are basically the same.
They just have a check key at 0x3000 ~ 0x3083 to prevent other kernels from running.
Due to this check key, R4ISDHC card cannot run 1.85 kernel of R4I-SDHC.
Conversely, r4i-sdhc cards cannot run 4.0 kernel of r4isdhc.
Of course, you can swap firmware or use a timebomb removed kernel.
Kernel
The key difference between the 1.85 and 4.0 kernels is in the map.bin file.
The 4.0 kernel can run Pokemon White 1-2 and Black 1-2, while 1.85 cannot.
Security bypass is related to the map.bin file and is linked to the r4.dat file.
I tried using the reference URL.
4.0 kernel was also able to bypass timebomb and verification, but it fails to drive Pokemon because the map.bin file is not properly linked.
There is no encryption in the kernel itself, but I gave up trying to analyze it due to encryption on the text and its complex structure.
Last edited by moon_rabbit,