--- a/doc/Compal-FFS	Fri Aug 28 06:07:53 2020 +0000
+++ b/doc/Compal-FFS	Fri Aug 28 15:58:46 2020 +0000
@@ -38,10 +38,11 @@
 
 The fact that the FFS on these Compal phones is strictly non-essential and can
 be trivially blown away and recreated implies that it does NOT store any vital
-data: no IMEI, no RF calibration values.  Instead the IMEI, the RF calibration
-values and a bunch of other records which we are not able to understand are
-stored in a completely different flash data structure of Compal's own invention:
-see our Compal-calibration article.
+data: no IMEI, no RF calibration values.  Instead the IMEI is programmed into
+the flash chip's protection register (OTP cells), whereas RF calibration values
+and a bunch of other records which we are not able to understand are stored in
+a completely different flash data structure of Compal's own invention: see our
+Compal-calibration article.
 
 Language reset
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