diff --git a/README.md b/README.md
index a4ec010..f27bff6 100644
--- a/README.md
+++ b/README.md
@@ -31,8 +31,8 @@ Create mbr-style disk image (or [download prebuilt img](https://github.com/fonta
 Flash image to sdcard using either `dd if=pu32-vmlinux.img of=/dev/<sdx> bs=1M oflag=sync status=progress` or [BalenaEtcher](https://www.balena.io/etcher).
 
 Flash corresponding FPGA bitstream:
-- [xula2lx25](xula2lx25.bit)
-- [nexys4ddr / nexysa7](nexys4ddr.bit)
+- [xula2lx25](xula2lx25.bit) ([rebuild](https://github.com/fontamsoc/hw/tree/master/pu32-xula2lx25/ise))
+- [nexys4ddr / nexysa7](nexys4ddr.bit) ([rebuild](https://github.com/fontamsoc/hw/tree/master/pu32-nexys4ddr/vivado))
 
 Connect to serial port using 115200n8.
 
diff --git a/binutils b/binutils
index a0ff656..2313ded 160000
--- a/binutils
+++ b/binutils
@@ -1 +1 @@
-Subproject commit a0ff656f9870eb9e8fd41eb1680486e59522058f
+Subproject commit 2313deddc8eff0c3db3f2ef3df19ef72bb8a9c76
diff --git a/fontamsoc-hw b/fontamsoc-hw
index d281a19..cae5e8a 160000
--- a/fontamsoc-hw
+++ b/fontamsoc-hw
@@ -1 +1 @@
-Subproject commit d281a1989e77093568be0a6ec8948d2cae0821f0
+Subproject commit cae5e8a1a05bfaa5ac3004d28aede6db8cabb2d9
diff --git a/fontamsoc-sw b/fontamsoc-sw
index ad734c9..7129e91 160000
--- a/fontamsoc-sw
+++ b/fontamsoc-sw
@@ -1 +1 @@
-Subproject commit ad734c986dc0924912cddf205b61e56b5bf8c003
+Subproject commit 7129e9116362acc949c3fb67e5e01de89266c652
diff --git a/linux b/linux
index bdb4840..bbc99cc 160000
--- a/linux
+++ b/linux
@@ -1 +1 @@
-Subproject commit bdb4840617e5da64df65ee15d0fa7e5144e65466
+Subproject commit bbc99cc3fd1a8d1d79e4c24705e3707fdc1a9c24
diff --git a/nexys4ddr.bit b/nexys4ddr.bit
index 032b9bc..38df1fe 100755
Binary files a/nexys4ddr.bit and b/nexys4ddr.bit differ
diff --git a/xula2lx25.bit b/xula2lx25.bit
index eb06309..8d7c4e3 100755
Binary files a/xula2lx25.bit and b/xula2lx25.bit differ