diff --git a/Cargo.lock b/Cargo.lock
index 66d867d..097faef 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -575,11 +575,10 @@ dependencies = [
 
 [[package]]
 name = "num-bigint-dig"
-version = "0.8.4"
+version = "0.8.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc84195820f291c7697304f3cbdadd1cb7199c0efc917ff5eafd71225c136151"
+checksum = "e661dda6640fad38e827a6d4a310ff4763082116fe217f279885c97f511bb0b7"
 dependencies = [
- "byteorder",
  "lazy_static",
  "libm",
  "num-integer",
@@ -773,9 +772,9 @@ dependencies = [
 
 [[package]]
 name = "rsa"
-version = "0.9.9"
+version = "0.9.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "40a0376c50d0358279d9d643e4bf7b7be212f1f4ff1da9070a7b54d22ef75c88"
+checksum = "b8573f03f5883dcaebdfcf4725caa1ecb9c15b2ef50c43a07b816e06799bb12d"
 dependencies = [
  "const-oid",
  "digest",
diff --git a/Cargo.toml b/Cargo.toml
index a707359..e0a73b9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,7 @@ cbc = "0.1.2"
 md5 = "0.8"
 sha1 = "0.10.6"
 flate2 = "1.1.5"
-rsa = { version = "0.9.9", features = ["hazmat"] }
+rsa = { version = "0.9.10", features = ["hazmat"] }
 hex = "0.4.3"
 ecb = "0.1.2"
 tar = "0.4.44"
diff --git a/src/formats/mtk_bdp.rs b/src/formats/mtk_bdp.rs
index b9cff1e..4063896 100644
--- a/src/formats/mtk_bdp.rs
+++ b/src/formats/mtk_bdp.rs
@@ -17,7 +17,7 @@ struct PITITPITEntry {
 	nand_size: u32,
     pit_offset: u32,
     pit_size: u32,
-    _private_data_2: u32,
+    _table_id: u32,
 }
 
 #[derive(BinRead)]
@@ -31,10 +31,10 @@ struct PITITBITEntry {
 #[derive(BinRead)]
 struct PITHeader {
     #[br(count = 8)] pit_magic: Vec<u8>,
-    _unk: u32,
-    first_entry_offset: u32,
-    entry_size: u32,
-    entry_count: u32,
+    _version: u32,
+    first_entry_offset: u32, //"header len"
+    entry_size: u32, //"item lenght"
+    entry_count: u32, //"item num"
 }
 
 static PIT_MAGIC: [u8; 8] = [0xDC, 0xEA, 0x30, 0x85, 0xDC, 0xEA, 0x30, 0x85];
@@ -43,10 +43,12 @@ static PIT_MAGIC: [u8; 8] = [0xDC, 0xEA, 0x30, 0x85, 0xDC, 0xEA, 0x30, 0x85];
 struct PITEntry {
     #[br(count = 16)] name_bytes: Vec<u8>,
     partition_id: u32,
-    _unknown: u32,
+    _part_info: u32,
     offset_on_nand: u32,
     size_on_nand: u32,
-    #[br(count = 32)] _unused: Vec<u8>,
+    _enc_size: u32,
+    _no_enc_size: u32,
+    #[br(count = 24)] _reserve: Vec<u8>,
 }
 impl PITEntry {
     fn name(&self) -> String {
@@ -60,7 +62,7 @@ struct BITEntry {
     offset: u32,
     size: u32,
     offset_in_target_part: u32,
-    _unknown: u32,
+    _bin_info: u32,  //"Bin info"
 }
 
 static BIT_MAGIC: [u8; 20] = [0xCD, 0xAB, 0x30, 0x85, 0xCD, 0xAB, 0x30, 0x85, 0xCD, 0xAB, 0x30, 0x85, 0xCD, 0xAB, 0x30, 0x85, 0xCD, 0xAB, 0x30, 0x85];