sceGeEdramSetSize not working properly

[Fewnity]

Hello, I'm trying to use sceGeEdramSetSize(0x400000) to increase the vram but it's not working on my PSP Street.
Any idea why this code doesn't work?
Thanks!

#include <string>
#include <pspkernel.h>
#include <pspdisplay.h>
#include <pspge.h>

PSP_MODULE_INFO("PSP VRAM ISSUE", 0, 1, 0);
PSP_MAIN_THREAD_ATTR(THREAD_ATTR_USER);

int main(int argc, char *argv[])
{
    pspDebugScreenInit(); // Initialize the debug screen

    if (sceGeEdramSetSize(0x400000) == 0)
    {
        pspDebugScreenPrintf("sceGeEdramSetSize 4MB ok\n"); // Never called
    }
    else
    {
        pspDebugScreenPrintf("sceGeEdramSetSize 4MB ERROR\n"); // Called
    }

    pspDebugScreenPrintf(std::to_string(sceGeEdramGetSize()).c_str()); // Prints "2097152" instead of the double

    while (true)
    {
        sceDisplayWaitVblankStart();
    }
}

[diamant3]

According to the documentation of that function here, Maybe it's the same issue in PSP 1000 of your PSP Street.

[Fewnity]

According to the documentation of that function here, Maybe it's the same issue in PSP 1000 of your PSP Street.

Well, the PSP Street has the extra ram, so it should work on a Street 🤔