diff --git a/docs/sbl-bringup.md b/docs/sbl-bringup.md
index be69327..d7d17d0 100644
--- a/docs/sbl-bringup.md
+++ b/docs/sbl-bringup.md
@@ -161,3 +161,8 @@
 ## b32: logger-tail b.w (2026-09-13)
 - 9-й вызывающий shared-эпилога (`0x8016342 blx`, пропущен статикой):
   точный `b.w` (флип съезжает +2). r7="SBL1" магика из настоящих таблиц.
+
+## b33: partition wrap-check (2026-09-13)
+- Валидатор партиций (`adds; blo success`, line 0x1FD) ассёртит:
+  r0+r4 не враппаются (PBL-таблицы нулевые, r4 stale). `blo` → `b`
+  (2B). TODO(MainOS): настоящие PBL/SMEM partition tables.
diff --git a/qemu/run-sbl.sh b/qemu/run-sbl.sh
index 9430bba..811cf64 100755
--- a/qemu/run-sbl.sh
+++ b/qemu/run-sbl.sh
@@ -5,7 +5,7 @@
 set -e
 cd "$(dirname "$0")/.."
 QEMU=~/qemu-src/qemu-8.2.2/build/qemu-system-arm
-B=${1:-b32}
+B=${1:-b33}
 IMG=fw/img/emmc-real.img
 if [ ! -f "$IMG" ]; then
   echo "no $IMG — сначала: python3 tools/ffu_extract.py fw/dl/RM1127_059X5R5_orig.ffu --emmc-user fw/img/user-real.bin"
diff --git a/tools/sbl_patch.py b/tools/sbl_patch.py
index ad7f2b6..a5546d8 100644
--- a/tools/sbl_patch.py
+++ b/tools/sbl_patch.py
@@ -1706,6 +1706,115 @@ def main():
 
     save(d, 'img0_b32.elf')
 
+    # b33 = b32 + partition wrap-check (0x801844E blo -> b):
+    # partition validator (adds r6,r0,r4; blo success) asserts (line
+    # 0x1FD) because r0+r4 don't wrap (PBL partition tables zeroed;
+    # r4 stale rodata-addr). Force success path (2B->2B).
+    # TODO(MainOS): real PBL/SMEM partition tables (r0 base high!).
+    d = bytearray(base)
+
+    for va, (a, b) in BLX2BL.items():
+
+        set4(d, va, b)
+
+    for va, exp, new in [
+
+        (0x802F664, 'e4f77efc', 'c046c046'),
+
+        (0x802F672, 'e6f7bbfa', 'c046c046'),
+
+        (0x802F678, 'e9f7fef9', 'c046c046'),
+
+        (0x801B71E, '9847fee7', 'c046c046'),
+
+        (0x8008396, 'fef780f9', 'c046c046'),
+
+        (0x8016184, 'fdf790fc', 'c046c046'),
+
+        (0x801B76C, '280b0508', '00000708'),
+
+        (0x8017AFC, 'bde8fc87', 'eef74fb8'),
+
+        (0x802F690, '9847fee7', 'c046c046'),
+
+        (0x801671C, '9847fee7', 'c046c046'),
+
+        (0x8013BAC, 'f8bd0a4a', 'f3f730b8'),
+
+        (0x801B6BE, 'bde8f081', 'ebf7c3ba'),
+
+        (0x8016720, '10bd0000', 'f0f7b2ba'),
+
+        (0x8034810, 'bde8fc87', 'd2f76eba'),
+
+        (0x8007798, 'bde8f08f', 'fff7c3ba'),
+
+        (0x8016334, 'f0f7a4ff', 'c046c046'),
+
+        (0x8016342, 'f0f79eef', 'f0f79dbf'),
+
+    ]:
+
+        assert hx(d, va) == exp, (hex(va), hx(d, va))
+
+        set4(d, va, new)
+
+    # Full bl idiom at 0x8006682 (bl + pop, 6B) -> NOPs (see b18).
+    o = off(0x8006682)
+
+    assert d[o:o + 6].hex() == '00f001f807bd', hx(d, 0x8006682, 6)
+
+    d[o:o + 6] = bytes.fromhex('c046c046c046')
+
+    o = off(0x8013AA8)
+
+    assert d[o:o + 4].hex() == '07f026be', hx(d, 0x8013AA8)
+
+    d[o:o + 4] = bytes.fromhex('c046c046')
+
+    o = off(0x8013BA6)
+
+    assert d[o:o + 2].hex() == 'b888', (hex(0x8013BA6), hx(d, 0x8013BA6, 2))
+
+    d[o:o + 2] = bytes.fromhex('ff20')
+
+    # Helper-pop S16 chain (see b25).
+    o = off(0x8007B66)
+
+    assert d[o:o + 2].hex() == '10bd', hx(d, 0x8007B66, 2)
+
+    d[o:o + 2] = bytes.fromhex('6047')
+
+    # Clock S11 (see b24).
+    o = off(0x800E988)
+
+    assert d[o:o + 2].hex() == '10bd', hx(d, 0x800E988, 2)
+
+    d[o:o + 2] = bytes.fromhex('7047')
+
+    # Poll re-init skip (see b27).
+    o = off(0x8007748)
+
+    assert d[o:o + 2].hex() == '96b1', hx(d, 0x8007748, 2)
+
+    d[o:o + 2] = bytes.fromhex('14e0')
+
+    # Poll-epilogue add NOP (see b28).
+    o = off(0x8007794)
+
+    assert d[o:o + 2].hex() == '07b0', hx(d, 0x8007794, 2)
+
+    d[o:o + 2] = bytes.fromhex('c046')
+
+    # Partition wrap-check: blo (2B 04d3) -> b (2B 04e0).
+    o = off(0x801844E)
+
+    assert d[o:o + 2].hex() == '04d3', hx(d, 0x801844E, 2)
+
+    d[o:o + 2] = bytes.fromhex('04e0')
+
+    save(d, 'img0_b33.elf')
+