--- a/README	Sun Oct 18 02:34:21 2020 +0000
+++ b/README	Sun Oct 18 22:57:26 2020 +0000
@@ -91,11 +91,15 @@
 
 Back in 2015 I (Mother Mychaela) made the decision to define FC aftermarket FFS
 on Mot C139 phones as 64x3 (meaning 3 sectors of 64 KiB each), located at
-0x3C0000.  Right now I am thinking that we should change to a larger FFS config,
-but I have not yet committed to any specific new config.  When and if I make
-the big switch, compal-new will be the new config, while compal-old will remain
-the original 2015 config.  At the present moment the two ffsagent-compal-*
-images are identical.
+0x3C0000.  This 2015 aftermarket FFS config persists in FreeCalypso Magnetite
+and Selenite firmwares.  However, our newer FC Tourmaline firmware (late 2020)
+uses a different aftermarket FFS config on Compal phones with 4 MiB flash,
+namely Mot C139, SE J100 and some rare C1xx specimen with 4 MiB flash: the new
+aftermarket FFS config is 64x7 (7 sectors of 64 KiB each) at 0x300000.
+
+ffsagent-compal-old.srec is for the old 2015/Magnetite/Selenite aftermarket FFS
+config, ffsagent-compal-new.srec is for the new FC Tourmaline aftermarket FFS
+config.
 
 No Calypso C05 target support
 =============================