diff --git a/nemu/prebuilt/nemu-b2d955b35e63d26982997c8722993706794a3e68 b/nemu/prebuilt/nemu-b2d955b35e63d26982997c8722993706794a3e68
deleted file mode 100755
index ca470029482bf24cf0f43adfdbf4da006c695ec6..0000000000000000000000000000000000000000
Binary files a/nemu/prebuilt/nemu-b2d955b35e63d26982997c8722993706794a3e68 and /dev/null differ
diff --git a/nemu/prebuilt/nemu-eb60a1a27066a289437c541b605da103dc5b71e4 b/nemu/prebuilt/nemu-eb60a1a27066a289437c541b605da103dc5b71e4
new file mode 100755
index 0000000000000000000000000000000000000000..565c8134909991ebe3541ceba835defebda41359
Binary files /dev/null and b/nemu/prebuilt/nemu-eb60a1a27066a289437c541b605da103dc5b71e4 differ
diff --git a/nemu/prebuilt/nemu-nommio-b2d955b35e63d26982997c8722993706794a3e68 b/nemu/prebuilt/nemu-nommio-b2d955b35e63d26982997c8722993706794a3e68
deleted file mode 100755
index 5ca63bdaac22ec8ad296dfedf28cac2e31722d63..0000000000000000000000000000000000000000
Binary files a/nemu/prebuilt/nemu-nommio-b2d955b35e63d26982997c8722993706794a3e68 and /dev/null differ
diff --git a/nemu/prebuilt/nemu-nommio-eb60a1a27066a289437c541b605da103dc5b71e4 b/nemu/prebuilt/nemu-nommio-eb60a1a27066a289437c541b605da103dc5b71e4
new file mode 100755
index 0000000000000000000000000000000000000000..8bfd79721a8db98827b3b0effb0f52f27b9c87cf
Binary files /dev/null and b/nemu/prebuilt/nemu-nommio-eb60a1a27066a289437c541b605da103dc5b71e4 differ