Mt6833 Scatter File Download -

import re
import json
import struct
from typing import Dict, List, Tuple, Optional
from dataclasses import dataclass, asdict
from pathlib import Path
from enum import Enum
class PartitionType(Enum):
NORMAL = "NORMAL"
PROTECTED = "PROTECTED"
RO = "RO"  # Read-only
@dataclass
class PartitionInfo:
name: str
linear_start_addr: int
physical_start_addr: int
partition_size: int
region: str
storage: str
type: str
file_path: Optional[str] = None
is_download: bool = False
class MT6833ScatterParser:
"""Parser for MT6833 scatter files"""
# MT6833 specific constants
EMMC_USER_AREA = 0x0
EMMC_BOOT1 = 0x1
EMMC_BOOT2 = 0x2
EMMC_RPMB = 0x3
# Preloader and critical partitions for MT6833
CRITICAL_PARTITIONS = [
    'preloader', 'pgpt', 'seccfg', 'lk', 'bootimg',
    'tee', 'logo', 'secro', 'md1img', 'spmfw',
    'scp', 'sspm', 'gz', 'vbmeta', 'dtbo'
]
def __init__(self, scatter_file_path: Path):
    self.scatter_path = scatter_file_path
    self.partitions: Dict[str, PartitionInfo] = {}
    self.chip_info: Dict = {}
    self._parse()
def _parse(self):
    """Parse the scatter file"""
    with open(self.scatter_path, 'r', encoding='utf-8') as f:
        content = f.read()
# Extract chip information
    chip_match = re.search(r'PLATFORM\s*:\s*(\S+)', content)
    if chip_match:
        self.chip_info['platform'] = chip_match.group(1)
# Verify MT6833
    if 'mt6833' not in self.chip_info.get('platform', '').lower():
        raise ValueError(f"Not an MT6833 scatter file. Found: self.chip_info.get('platform')")
# Parse partitions
    partitions_raw = re.split(r'- partition_index:', content)[1:]
for part_raw in partitions_raw:
        partition = self._parse_partition(part_raw)
        self.partitions[partition.name] = partition
def _parse_partition(self, part_raw: str) -> PartitionInfo:
    """Parse individual partition data"""
    # Extract fields using regex
    def extract_field(field_pattern):
        match = re.search(rf'field_pattern\s*=\s*(\S+)', part_raw)
        return match.group(1) if match else None
name = extract_field('partition_name')
    linear_start = int(extract_field('linear_start_addr'), 16)
    physical_start = int(extract_field('physical_start_addr'), 16)
    partition_size = int(extract_field('partition_size'), 16)
    region = extract_field('region')
    storage = extract_field('storage')
    part_type = extract_field('type')
    file_path = extract_field('file_name')
    is_download = extract_field('is_download') == 'true'
return PartitionInfo(
        name=name,
        linear_start_addr=linear_start,
        physical_start_addr=physical_start,
        partition_size=partition_size,
        region=region,
        storage=storage,
        type=part_type,
        file_path=file_path,
        is_download=is_download
    )
def validate_partition_sizes(self) -> List[str]:
    """Validate partition sizes for MT6833"""
    warnings = []
# Check critical partitions have reasonable sizes
    for part_name in self.CRITICAL_PARTITIONS:
        if part_name in self.partitions:
            part = self.partitions[part_name]
# Preloader specific checks
            if part_name == 'preloader' and part.partition_size > 0x100000:  # >1MB
                warnings.append(f"Preloader size unusually large: part.partition_size bytes")
# Boot image size check (typical max 64MB)
            if part_name == 'bootimg' and part.partition_size > 0x4000000:
                warnings.append(f"Boot image size exceeds typical limit: part.partition_size bytes")
# LK (Little Kernel) size check
            if part_name == 'lk' and part.partition_size > 0x200000:  # >2MB
                warnings.append(f"LK size unusually large: part.partition_size bytes")
return warnings
def check_address_overlap(self) -> List[Tuple[str, str]]:
    """Check for overlapping partition addresses"""
    sorted_parts = sorted(self.partitions.values(), key=lambda x: x.linear_start_addr)
    overlaps = []
for i in range(len(sorted_parts) - 1):
        current = sorted_parts[i]
        next_part = sorted_parts[i + 1]
current_end = current.linear_start_addr + current.partition_size
if current_end > next_part.linear_start_addr:
            overlaps.append((current.name, next_part.name))
return overlaps
def generate_download_config(self) -> Dict:
    """Generate download configuration for SP Flash Tool / custom flasher"""
    config = 
        'device': 'mt6833',
        'storage_type': 'emmc',
        'partitions_to_flash': [],
        'verify_after_flash': True,
        'preloader_required': True,
        'da_file': 'MT6833_DA.bin',
        'auth_file_required': True,
        'brom_mode': 'usb'
for partition in self.partitions.values():
        if partition.is_download and partition.file_path:
            config['partitions_to_flash'].append(
                'name': partition.name,
                'address': partition.linear_start_addr,
                'size': partition.partition_size,
                'file': partition.file_path,
                'region': partition.region
            )
return config
def generate_checksum_data(self) -> Dict[str, str]:
    """Generate checksums for download verification"""
    import hashlib
checksums = {}
    base_dir = self.scatter_path.parent
for partition in self.partitions.values():
        if partition.file_path:
            file_full_path = base_dir / partition.file_path
            if file_full_path.exists():
                with open(file_full_path, 'rb') as f:
                    content = f.read(partition.partition_size)
                    checksums[partition.name] = hashlib.md5(content).hexdigest()
return checksums

class MT6833DownloadValidator:
"""Validate firmware before flashing to MT6833 device"""
def __init__(self, scatter_parser: MT6833ScatterParser):
    self.parser = scatter_parser
def pre_flash_check(self) -> Dict:
    """Complete pre-flash validation"""
    results = 
        'valid': True,
        'warnings': [],
        'errors': [],
        'missing_files': [],
        'recommendations': []
# Check all required files exist
    base_dir = self.parser.scatter_path.parent
    for partition in self.parser.partitions.values():
        if partition.is_download and partition.file_path:
            file_path = base_dir / partition.file_path
            if not file_path.exists():
                results['errors'].append(f"Missing file: partition.file_path")
                results['valid'] = False
            elif file_path.stat().st_size > partition.partition_size:
                results['warnings'].append(
                    f"File partition.file_path exceeds partition size"
                )
# Check partition overlaps
    overlaps = self.parser.check_address_overlap()
    if overlaps:
        results['errors'].append(f"Address overlaps detected: overlaps")
        results['valid'] = False
# Validate sizes
    size_warnings = self.parser.validate_partition_sizes()
    results['warnings'].extend(size_warnings)
# MT6833 specific recommendations
    if 'preloader' in self.parser.partitions:
        results['recommendations'].append(
            "Ensure device is in BROM mode before flashing preloader"
        )
results['recommendations'].append(
        "Use authenticated DA file for MT6833 (sec policy requires auth)"
    )
return results
def generate_flash_script(self, output_type='bash') -> str:
    """Generate flashing script for automated flashing"""
if output_type == 'python':
        return self._generate_python_flasher()
    else:
        return self._generate_bash_flasher()
def _generate_bash_flasher(self) -> str:
    """Generate bash script using fastboot/sp flash tool commands"""
    script_lines = [
        "#!/bin/bash",
        "# MT6833 Auto-generated flash script",
        "",
        "echo 'Starting MT6833 flashing process...'",
        "echo 'WARNING: This will overwrite device partitions!'",
        "read -p 'Continue? (y/N): ' -n 1 -r",
        "echo",
        "if [[ ! $REPLY =~ ^[Yy]$ ]]; then",
        "    exit 1",
        "fi",
        ""
    ]
base_dir = self.parser.scatter_path.parent
for part in self.parser.partitions.values():
        if part.is_download and part.file_path:
            script_lines.append(f"# Flashing part.name")
            script_lines.append(
                f"fastboot flash part.name base_dir / part.file_path"
            )
            script_lines.append("if [ $? -ne 0 ]; then")
            script_lines.append(f"    echo 'Failed to flash part.name'")
            script_lines.append("    exit 1")
            script_lines.append("fi")
            script_lines.append("")
script_lines.append("echo 'Flashing complete!'")
    script_lines.append("fastboot reboot")
return "\n".join(script_lines)
def _generate_python_flasher(self) -> str:
    """Generate Python script using pyserial for MT6833 flashing"""
    return """#!/usr/bin/env python3

"""
MT6833 Flasher - Generated from scatter file
Requires: pyserial, pyusb
""" mt6833 scatter file download
import serial
import usb.core
import time
import struct
class MT6833Flasher:
def init(self, device_vid=0x0e8d, device_pid=0x2000):
self.device = usb.core.find(idVendor=device_vid, idProduct=device_pid)
if self.device is None:
raise ValueError("MT6833 device not found in BROM mode")
def send_da(self, da_path):
    \"\"\"Send Download Agent (DA) to device\"\"\"
    print(f"Sending DA: da_path")
    # DA protocol implementation here
    # This is simplified - real implementation requires full BROM protocol
def flash_partition(self, address, data):
    \"\"\"Flash data to specific address\"\"\"
    print(f"Flashing at address: 0xaddress:X")
    # Flash implementation
def main(self):
    print("MT6833 Flasher starting...")
    # Generated partition flashing code

if name == "main":
flasher = MT6833Flasher()
flasher.main()
"""
This is the safest method.
A scatter file (usually named MT6833_Android_scatter.txt) is a memory layout map for MediaTek devices. It defines:

For MT6833, this file is essential because the chipset uses a non-standard partitioning scheme compared to Qualcomm or Exynos.



Launch SP Flash Tool as Administrator.


Load the Scatter File



Select Flash Mode



Prepare the Phone



Flash



Disconnect and Reboot – First boot may take 5–10 minutes. import re import json import struct from typing



This scatter file is compatible with devices running the MT6833 platform. Common devices utilizing this chipset include:


⚠️ Important Note: Using a scatter file meant for a different device variant can permanently brick your phone. Please verify your device's specific codename before proceeding.