RT-4D: реверс прошивки, русификация, кастомный UI, флешеры

- Полный RE стока V3.25 (Cortex-M4F) + FM100B: карта памяти, протокол, codeplug, UI-архитектура
- Русификация: свой CP1251-шрифт + патч рендера, перевод меню и надписей, ребренд Ru-4D V3.25
- Блюпринт переделки UI + C-тулчейн (clang thumbv7em), доказан инъекцией
- Готовые флешеры: WebSerial .html и Windows .exe со вшитой прошивкой
- Дамп SPI рации, стоковая прошивка, инструменты сборки

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

research/probe10.py

@@ -0,0 +1,40 @@
+import io
+data = open(r"C:/Users/vikto/Documents/Claude/rt-4d/radio-spi-dump.bin","rb").read()
+out=io.open(r"C:/Users/vikto/Documents/Claude/rt-4d/analyze/out10.txt","w",encoding="utf-8")
+
+# Render candidate glyphs at 0x19c000 as bitmaps to confirm font.
+# Try 16x16 (32 bytes/glyph) and 12x12 etc.
+def render(off, w_bytes, rows, label):
+    out.write("glyph @%#x %dx%d bytes/row=%d:\n"%(off,rows,w_bytes*8,w_bytes))
+    for r in range(rows):
+        line=""
+        for cb in range(w_bytes):
+            b=data[off+r*w_bytes+cb]
+            for bit in range(8):
+                line += "#" if (b>>bit)&1 else "."
+        out.write(line+"\n")
+    out.write("\n")
+
+# 16x16 = 2 bytes/row, 16 rows = 32 bytes
+for g in range(6):
+    render(0x19c000+g*32, 2, 16, "16x16 glyph %d"%g)
+
+# Occupancy across 0x198000..0x242000: how much real font data
+seg=data[0x198000:0x242000]
+from collections import Counter
+c=Counter(seg)
+out.write("region 0x198000-0x242000 total=%d ff=%d zero=%d other=%d\n"%(len(seg),c[0xff],c[0],len(seg)-c[0xff]-c[0]))
+
+# The font is likely: big CJK 16x16 bitmap set. count of 32-byte glyphs that fit in nonFF area
+# Check periodicity of 32 in the 0x19c000+ area by counting nonzero glyph cells
+out.write("\nSample far into region 0x200000:\n")
+def hx(off,n=48):
+    s=""
+    for j in range(0,n,16):
+        ch=data[off+j:off+j+16]
+        s+="%08x  %s\n"%(off+j,' '.join('%02x'%b for b in ch))
+    return s
+out.write(hx(0x200000,0x40))
+out.write("\n0x240000:\n"+hx(0x240000,0x40))
+out.close()
+print("done")