diff --git a/content/datasheets/development/fipy.md b/content/datasheets/development/fipy.md
index c0063a2..edba09e 100644
--- a/content/datasheets/development/fipy.md
+++ b/content/datasheets/development/fipy.md
@@ -26,10 +26,10 @@ The drawing of the LTE-M antenna is available as a [PDF File](/gitbook/assets/lt
 
 The Fipy is certified for [CE RED](/gitbook/assets/fipy_c03-b0-red-final.pdf) and [FCC DSS](/gitbook/assets/pycom-2ajmtfipy01r-fcc-grant-dss.pdf) [FCC DTS](/gitbook/assets/pycom-2ajmtfipy01r-fcc-grant-dts.pdf) [FCC DXX](/gitbook/assets/pycom-2ajmtfipy01r-fcc-grant-dxx.pdf) [FCC TNB](/gitbook/assets/pycom-2ajmtfipy01r-fcc-grant-tnb.pdf)
 [RCM](/gitbook/assets/RCM-Fipy.pdf)
-[ROHS certification](gitbook/assets/RoHs_declarations/RoHS-for-FiPy(8217-00091P)-20190523.pdf)
+[ROHS certification](/gitbook/assets/RoHs_declarations/RoHS-for-FiPy(8217-00091P)-20190523.pdf)
 ## Pinout
 
-The pinout of the FiPy is available as a [PDF File](/gitbook/assents/fipy-pinout.pdf)
+The pinout of the FiPy is available as a [PDF File](/gitbook/assets/fipy-pinout.pdf)
 
 ![](/gitbook/assets/fipy-pinout.png)
 
diff --git a/content/datasheets/expansionboards/expansion3.md b/content/datasheets/expansionboards/expansion3.md
index a083db1..99934bb 100644
--- a/content/datasheets/expansionboards/expansion3.md
+++ b/content/datasheets/expansionboards/expansion3.md
@@ -14,7 +14,7 @@ aliases:
 
 The datasheet of the Expansion Board is available as a [PDF File](/gitbook/assets/expansion3-specsheet-1.pdf)
 
-[ROHS certification](/gitbook/assets/RoHs_declarations/RoHS-for-Expansion-Board(8286-00033P)-20190523.pdf)
+[ROHS certification](/gitbook/assets/RoHs_declarations/RoHS-for-Expansion Board(8286-00033P)-20190523.pdf)
 
 ## Pinout
 
@@ -55,7 +55,7 @@ The Expansion Board features a single cell Li-Ion/Li-Po charger. When the board
 
 ## Troubleshooting
 
-* If PIC stays in bootloader mode, the [`dfu-util` update](/pytrackpysense/installation/firmware) should be performed
+* If PIC stays in bootloader mode, the [`dfu-util` update](/updatefirmware/expansionboard/) should be performed
 
 ## 3D model for case design