+/*
+ * Note on the reserved field of the chk_header:
+ * OFW naming scheme is typically: DEVICENAME-VA.B.C.D_E.F.G.chk, with A-G
+ * between 0 and 255. For instance: EX3700_EX3800-V1.0.0.58_1.0.38.chk
+ * The reserved field works like this:
+ * reserved[0]: region code. 1 for WW (WorldWide) and 2 for NA (North America)
+ * reserved[1]: A
+ * reserved[2]: B
+ * reserved[3]: C
+ * reserved[4]: D
+ * reserved[5]: E
+ * reserved[6]: F
+ * reserved[7]: G
+ */