fixed byte programming for 28sf0x0; regenerated flashers

lib/flashwrite.asx

@@ -407,6 +407,7 @@ FORMATTED
 	; sec
 formatted_next
 	jsr GetBankNumToX
+	jsr flashunlockchip
 formatted_next2
 	lda _writeaddr:$ffff ; this is source address
 	jsr flashwritebyte
@@ -416,6 +417,7 @@ formatted_next2
 	cmp _writeaddr+1
 	bne formatted_next2
 	jsr flashend
+	jsr flashlockchip
 	jmp COMPARE_CRC16_DEST_ALL
 
 FINISH_PROCESS

lib/flashwritelib.asx

@@ -403,6 +403,13 @@ flashsetaddr
 	sty flashaddr+1
 	rts
 
+flashunlockchip
+	lda #flash_unlockchip
+	jmp jsrtovectorproc
+flashlockchip
+	lda #flash_lockchip
+	jmp jsrtovectorproc
+
 flashsetbank
 	sta $d500,x
 	lda $d013