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Beken BK7231/BK7252 SPI flashing and recovery - new flasher tool and protocol specs

p.kaczmarek2 1029 46
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📢 Listen (AI):
  • #31 21713492
    DeDaMrAz
    Level 20  
    p.kaczmarek2 wrote:
    I think we need to capture traffic for TWX817



    That's JTAG or SWD, sure we can do that but you'll still need a dedicated HW for communication.
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  • #33 21714040
    insmod
    Level 28  
    New fix uploaded - backup saving on RTLZ/RTLD and RTLZ2 when using "Backup and flash new". LN was fixed earlier.
  • #34 21714071
    p.kaczmarek2
    Moderator Smart Home  
    Nice progress. Btw, I think some of the common backup saving, etc, could be moved in future to the shared base class.

    Is it merge ready? Or maybe I will try it on Ubuntu VM, if it could work...
    Helpful post? Buy me a coffee.
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  • #36 21714143
    insmod
    Level 28  
    >>21714087
    Fixed Z2 error.

    Updated BL602:
    Flash size detection.
    Backups can now be restored.
    Loader converted to base64 string.
    Full flash erase and partial erase. (it prints "Command timed out!" on erase, but that's because erase doesn't return "OK", but something else).
    Can write dts and partitions, but not boot and firmware (because no header generation).

    Merge ready, i believe. BK, RTLD and RTLZ2 works with mono (6.12, not 6.14) on a real pc. RTLB doesn't because bauds higher than 921600 aren't working for me, and RTLB rom default baud rate is 1500000.
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  • #37 21714176
    p.kaczmarek2
    Moderator Smart Home  
    I just got another BK7252 camera and tried to read flash with UART custom read, it seems that we need to add doUnprotect, or, more precisely, get flash ID call for non-N devices. Currently FLASH_SIZE is only set there, so it's not present on BK7231T and BK7252. Futhermore, for full read, the value is hardcoded.
    Helpful post? Buy me a coffee.
  • #38 21714178
    insmod
    Level 28  
    >>21714176
    It won't work, i've tried.
    Even just flash id without unprotect
  • #39 21714186
    divadiow
    Level 36  
    anything in these of assistance or not really?

    Beken BK7231/BK7252 SPI flashing and recovery - new flasher tool and protocol specs
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  • #40 21714187
    p.kaczmarek2
    Moderator Smart Home  
    Oh no, but still, thanks, at least you saved me some effort. So we need... a field for flash size, I guess?

    I tried that via UART on Doorbell:
    Beken BK7231/BK7252 SPI flashing and recovery - new flasher tool and protocol specs
    I allowed custom read to get past max size.
    Code: text Expand Select all Copy to clipboard
    
Starting read!
Read parms: start 0x11000 (sector 17), len 0x411000 (69632 sectors)
Now is: środa, 8 października 2025 17:48:17.
Flasher mode: BK7252
Going to open port: COM3.
Serial port open!
Getting bus... (now, please do reboot by CEN or by power off/on)
Getting bus failed, will try again - 0/100!
Getting bus success!
Going to set baud rate setting (460800)!
Going to start reading at offset 0x11000...
Reading 0x11000... Ok! Reading 0x12000... Ok! Reading 0x13000... Ok! Reading 0x14000... Ok! Reading 0x15000... Ok! Reading 0x16000... Ok! Reading 0x17000... Ok! Reading 0x18000... Ok! Reading 0x19000... Ok! Reading 0x1A000... Ok! Reading 0x1B000... Ok! Reading 0x1C000... Ok! Reading 0x1D000... Ok! Reading 0x1E000... Ok! Reading 0x1F000... Ok! Reading 0x20000... Ok! Reading 0x21000... Ok! Reading 0x22000... Ok! Reading 0x23000... Ok! Reading 0x24000... Ok! Reading 0x25000... Ok! Reading 0x26000... Ok! Reading 0x27000... Ok! Reading 0x28000... Ok! Reading 0x29000... Ok! Reading 0x2A000... Ok! Reading 0x2B000... Ok! Reading 0x2C000... Ok! Reading 0x2D000... Ok! Reading 0x2E000... Ok! Reading 0x2F000... Ok! Reading 0x30000... Ok! Reading 0x31000... Ok! Reading 0x32000... Ok! Reading 0x33000... Ok! Reading 0x34000... Ok! Reading 0x35000... Ok! Reading 0x36000... Ok! Reading 0x37000... Ok! Reading 0x38000... Ok! Reading 0x39000... Ok! Reading 0x3A000... Ok! Reading 0x3B000... Ok! Reading 0x3C000... Ok! Reading 0x3D000... Ok! Reading 0x3E000... Ok! Reading 0x3F000... Ok! Reading 0x40000... Ok! Reading 0x41000... Ok! Reading 0x42000... Ok! Reading 0x43000... Ok! Reading 0x44000... Ok! Reading 0x45000... Ok! Reading 0x46000... Ok! Reading 0x47000... Ok! Reading 0x48000... Ok! Reading 0x49000... Ok! Reading 0x4A000... Ok! Reading 0x4B000... Ok! Reading 0x4C000... Ok! Reading 0x4D000... Ok! Reading 0x4E000... Ok! Reading 0x4F000... Ok! Reading 0x50000... Ok! Reading 0x51000... Ok! Reading 0x52000... Ok! Reading 0x53000... Ok! Reading 0x54000... Ok! Reading 0x55000... Ok! Reading 0x56000... Ok! Reading 0x57000... Ok! Reading 0x58000... Ok! Reading 0x59000... Ok! Reading 0x5A000... Ok! Reading 0x5B000... Ok! Reading 0x5C000... Ok! Reading 0x5D000... Ok! Reading 0x5E000... Ok! Reading 0x5F000... Ok! Reading 0x60000... Ok! Reading 0x61000... Ok! Reading 0x62000... Ok! Reading 0x63000... Ok! Reading 0x64000... Ok! Reading 0x65000... Ok! Reading 0x66000... Ok! Reading 0x67000... Ok! Reading 0x68000... Ok! Reading 0x69000... Ok! Reading 0x6A000... Ok! Reading 0x6B000... Ok! Reading 0x6C000... Ok! Reading 0x6D000... Ok! Reading 0x6E000... Ok! Reading 0x6F000... Ok! Reading 0x70000... Ok! Reading 0x71000... Ok! Reading 0x72000... Ok! Reading 0x73000... Ok! Reading 0x74000... Ok! Reading 0x75000... Ok! Reading 0x76000... Ok! Reading 0x77000... Ok! Reading 0x78000... Ok! Reading 0x79000... Ok! Reading 0x7A000... Ok! Reading 0x7B000... Ok! Reading 0x7C000... Ok! Reading 0x7D000... Ok! Reading 0x7E000... Ok! Reading 0x7F000... Ok! Reading 0x80000... Ok! Reading 0x81000... Ok! Reading 0x82000... Ok! Reading 0x83000... Ok! Reading 0x84000... Ok! Reading 0x85000... Ok! Reading 0x86000... Ok! Reading 0x87000... Ok! Reading 0x88000... Ok! Reading 0x89000... Ok! Reading 0x8A000... Ok! Reading 0x8B000... Ok! Reading 0x8C000... Ok! Reading 0x8D000... Ok! Reading 0x8E000... Ok! Reading 0x8F000... Ok! Reading 0x90000... Ok! Reading 0x91000... Ok! Reading 0x92000... Ok! Reading 0x93000... Ok! Reading 0x94000... Ok! Reading 0x95000... Ok! Reading 0x96000... Ok! Reading 0x97000... Ok! Reading 0x98000... Ok! Reading 0x99000... Ok! Reading 0x9A000... Ok! Reading 0x9B000... Ok! Reading 0x9C000... Ok! Reading 0x9D000... Ok! Reading 0x9E000... Ok! Reading 0x9F000... Ok! Reading 0xA0000... Ok! Reading 0xA1000... Ok! Reading 0xA2000... Ok! Reading 0xA3000... Ok! Reading 0xA4000... Ok! Reading 0xA5000... Ok! Reading 0xA6000... Ok! Reading 0xA7000... Ok! Reading 0xA8000... Ok! Reading 0xA9000... Ok! Reading 0xAA000... Ok! Reading 0xAB000... Ok! Reading 0xAC000... Ok! Reading 0xAD000... Ok! Reading 0xAE000... Ok! Reading 0xAF000... Ok! Reading 0xB0000... Ok! Reading 0xB1000... Ok! Reading 0xB2000... Ok! Reading 0xB3000... Ok! Reading 0xB4000... Ok! Reading 0xB5000... Ok! Reading 0xB6000... Ok! Reading 0xB7000... Ok! Reading 0xB8000... Ok! Reading 0xB9000... Ok! Reading 0xBA000... Ok! Reading 0xBB000... Ok! Reading 0xBC000... Ok! Reading 0xBD000... Ok! Reading 0xBE000... Ok! Reading 0xBF000... Ok! Reading 0xC0000... Ok! Reading 0xC1000... Ok! Reading 0xC2000... Ok! Reading 0xC3000... Ok! Reading 0xC4000... Ok! Reading 0xC5000... Ok! Reading 0xC6000... Ok! Reading 0xC7000... Ok! Reading 0xC8000... Ok! Reading 0xC9000... Ok! Reading 0xCA000... Ok! Reading 0xCB000... Ok! Reading 0xCC000... Ok! Reading 0xCD000... Ok! Reading 0xCE000... Ok! Reading 0xCF000... Ok! Reading 0xD0000... Ok! Reading 0xD1000... Ok! Reading 0xD2000... Ok! Reading 0xD3000... Ok! Reading 0xD4000... Ok! Reading 0xD5000... Ok! Reading 0xD6000... Ok! Reading 0xD7000... Ok! Reading 0xD8000... Ok! Reading 0xD9000... Ok! Reading 0xDA000... Ok! Reading 0xDB000... Ok! Reading 0xDC000... Ok! Reading 0xDD000... Ok! Reading 0xDE000... Ok! Reading 0xDF000... Ok! Reading 0xE0000... Ok! Reading 0xE1000... Ok! Reading 0xE2000... Ok! Reading 0xE3000... Ok! Reading 0xE4000... Ok! Reading 0xE5000... Ok! Reading 0xE6000... Ok! Reading 0xE7000... Ok! Reading 0xE8000... Ok! Reading 0xE9000... Ok! Reading 0xEA000... Ok! Reading 0xEB000... Ok! Reading 0xEC000... Ok! Reading 0xED000... Ok! Reading 0xEE000... Ok! Reading 0xEF000... Ok! Reading 0xF0000... Ok! Reading 0xF1000... Ok! Reading 0xF2000... Ok! Reading 0xF3000... Ok! Reading 0xF4000... Ok! Reading 0xF5000... Ok! Reading 0xF6000... Ok! Reading 0xF7000... Ok! Reading 0xF8000... Ok! Reading 0xF9000... Ok! Reading 0xFA000... Ok! Reading 0xFB000... Ok! Reading 0xFC000... Ok! Reading 0xFD000... Ok! Reading 0xFE000... Ok! Reading 0xFF000... Ok! Reading 0x100000... Ok! Reading 0x101000... Ok! Reading 0x102000... Ok! Reading 0x103000... Ok! Reading 0x104000... Ok! Reading 0x105000... Ok! Reading 0x106000... Ok! Reading 0x107000... Ok! Reading 0x108000... Ok! Reading 0x109000... Ok! Reading 0x10A000... Ok! Reading 0x10B000... Ok! Reading 0x10C000... Ok! Reading 0x10D000... Ok! Reading 0x10E000... Ok! Reading 0x10F000... Ok! Reading 0x110000... Ok! Reading 0x111000... Ok! Reading 0x112000... Ok! Reading 0x113000... Ok! Reading 0x114000... Ok! Reading 0x115000... Ok! Reading 0x116000... Ok! Reading 0x117000... Ok! Reading 0x118000... Ok! Reading 0x119000... Ok! Reading 0x11A000... Ok! Reading 0x11B000... Ok! Reading 0x11C000... Ok! Reading 0x11D000... Ok! Reading 0x11E000... Ok! Reading 0x11F000... Ok! Reading 0x120000... Ok! Reading 0x121000... Ok! Reading 0x122000... Ok! Reading 0x123000... Ok! Reading 0x124000... Ok! Reading 0x125000... Ok! Reading 0x126000... Ok! Reading 0x127000... Ok! Reading 0x128000... Ok! Reading 0x129000... Ok! Reading 0x12A000... Ok! Reading 0x12B000... Ok! Reading 0x12C000... Ok! Reading 0x12D000... Ok! Reading 0x12E000... Ok! Reading 0x12F000... Ok! Reading 0x130000... Ok! Reading 0x131000... Ok! Reading 0x132000... Ok! Reading 0x133000... Ok! Reading 0x134000... Ok! Reading 0x135000... Ok! Reading 0x136000... Ok! Reading 0x137000... Ok! Reading 0x138000... Ok! Reading 0x139000... Ok! Reading 0x13A000... Ok! Reading 0x13B000... Ok! Reading 0x13C000... Ok! Reading 0x13D000... Ok! Reading 0x13E000... Ok! Reading 0x13F000... Ok! Reading 0x140000... Ok! Reading 0x141000... Ok! Reading 0x142000... Ok! Reading 0x143000... Ok! Reading 0x144000... Ok! Reading 0x145000... Ok! Reading 0x146000... Ok! Reading 0x147000... Ok! Reading 0x148000... Ok! Reading 0x149000... Ok! Reading 0x14A000... Ok! Reading 0x14B000... Ok! Reading 0x14C000... Ok! Reading 0x14D000... Ok! Reading 0x14E000... Ok! Reading 0x14F000... Ok! Reading 0x150000... Ok! Reading 0x151000... Ok! Reading 0x152000... Ok! Reading 0x153000... Ok! Reading 0x154000... Ok! Reading 0x155000... Ok! Reading 0x156000... Ok! Reading 0x157000... Ok! Reading 0x158000... Ok! Reading 0x159000... Ok! Reading 0x15A000... Ok! Reading 0x15B000... Ok! Reading 0x15C000... Ok! Reading 0x15D000... Ok! Reading 0x15E000... Ok! Reading 0x15F000... Ok! Reading 0x160000... Ok! Reading 0x161000... Ok! Reading 0x162000... Ok! Reading 0x163000... Ok! Reading 0x164000... Ok! Reading 0x165000... Ok! Reading 0x166000... Ok! Reading 0x167000... Ok! Reading 0x168000... Ok! Reading 0x169000... Ok! Reading 0x16A000... Ok! Reading 0x16B000... Ok! Reading 0x16C000... Ok! Reading 0x16D000... Ok! Reading 0x16E000... Ok! Reading 0x16F000... Ok! Reading 0x170000... Ok! Reading 0x171000... Ok! Reading 0x172000... Ok! Reading 0x173000... Ok! Reading 0x174000... Ok! Reading 0x175000... Ok! Reading 0x176000... Ok! Reading 0x177000... Ok! Reading 0x178000... Ok! Reading 0x179000... Ok! Reading 0x17A000... Ok! Reading 0x17B000... Ok! Reading 0x17C000... Ok! Reading 0x17D000... Ok! Reading 0x17E000... Ok! Reading 0x17F000... Ok! Reading 0x180000... Ok! Reading 0x181000... Ok! Reading 0x182000... Ok! Reading 0x183000... Ok! Reading 0x184000... Ok! Reading 0x185000... Ok! Reading 0x186000... Ok! Reading 0x187000... Ok! Reading 0x188000... Ok! Reading 0x189000... Ok! Reading 0x18A000... Ok! Reading 0x18B000... Ok! Reading 0x18C000... Ok! Reading 0x18D000... Ok! Reading 0x18E000... Ok! Reading 0x18F000... Ok! Reading 0x190000... Ok! Reading 0x191000... Ok! Reading 0x192000... Ok! Reading 0x193000... Ok! Reading 0x194000... Ok! Reading 0x195000... Ok! Reading 0x196000... Ok! Reading 0x197000... Ok! Reading 0x198000... Ok! Reading 0x199000... Ok! Reading 0x19A000... Ok! Reading 0x19B000... Ok! Reading 0x19C000... Ok! Reading 0x19D000... Ok! Reading 0x19E000... Ok! Reading 0x19F000... Ok! Reading 0x1A0000... Ok! Reading 0x1A1000... Ok! Reading 0x1A2000... Ok! Reading 0x1A3000... Ok! Reading 0x1A4000... Ok! Reading 0x1A5000... Ok! Reading 0x1A6000... Ok! Reading 0x1A7000... Ok! Reading 0x1A8000... Ok! Reading 0x1A9000... Ok! Reading 0x1AA000... Ok! Reading 0x1AB000... Ok! Reading 0x1AC000... Ok! Reading 0x1AD000... Ok! Reading 0x1AE000... Ok! Reading 0x1AF000... Ok! Reading 0x1B0000... Ok! Reading 0x1B1000... Ok! Reading 0x1B2000... Ok! Reading 0x1B3000... Ok! Reading 0x1B4000... Ok! Reading 0x1B5000... Ok! Reading 0x1B6000... Ok! Reading 0x1B7000... Ok! Reading 0x1B8000... Ok! Reading 0x1B9000... Ok! Reading 0x1BA000... Ok! Reading 0x1BB000... Ok! Reading 0x1BC000... Ok! Reading 0x1BD000... Ok! Reading 0x1BE000... Ok! Reading 0x1BF000... Ok! Reading 0x1C0000... Ok! Reading 0x1C1000... Ok! Reading 0x1C2000... Ok! Reading 0x1C3000... Ok! Reading 0x1C4000... Ok! Reading 0x1C5000... Ok! Reading 0x1C6000... Ok! Reading 0x1C7000... Ok! Reading 0x1C8000... Ok! Reading 0x1C9000... Ok! Reading 0x1CA000... Ok! Reading 0x1CB000... Ok! Reading 0x1CC000... Ok! Reading 0x1CD000... Ok! Reading 0x1CE000... Ok! Reading 0x1CF000... Ok! Reading 0x1D0000... Ok! Reading 0x1D1000... Ok! Reading 0x1D2000... Ok! Reading 0x1D3000... Ok! Reading 0x1D4000... Ok! Reading 0x1D5000... Ok! Reading 0x1D6000... Ok! Reading 0x1D7000... Ok! Reading 0x1D8000... Ok! Reading 0x1D9000... Ok! Reading 0x1DA000... Ok! Reading 0x1DB000... Ok! Reading 0x1DC000... Ok! Reading 0x1DD000... Ok! Reading 0x1DE000... Ok! Reading 0x1DF000... Ok! Reading 0x1E0000... Ok! Reading 0x1E1000... Ok! Reading 0x1E2000... Ok! Reading 0x1E3000... Ok! Reading 0x1E4000... Ok! Reading 0x1E5000... Ok! Reading 0x1E6000... Ok! Reading 0x1E7000... Ok! Reading 0x1E8000... Ok! Reading 0x1E9000... Ok! Reading 0x1EA000... Ok! Reading 0x1EB000... Ok! Reading 0x1EC000... Ok! Reading 0x1ED000... Ok! Reading 0x1EE000... Ok! Reading 0x1EF000... Ok! Reading 0x1F0000... Ok! Reading 0x1F1000... Ok! Reading 0x1F2000... Ok! Reading 0x1F3000... Ok! Reading 0x1F4000... Ok! Reading 0x1F5000... Ok! Reading 0x1F6000... Ok! Reading 0x1F7000... Ok! Reading 0x1F8000... Ok! Reading 0x1F9000... Ok! Reading 0x1FA000... Ok! Reading 0x1FB000... Ok! Reading 0x1FC000... Ok! Reading 0x1FD000... Ok! Reading 0x1FE000... Ok! Reading 0x1FF000... Ok! Reading 0x200000... Ok! Reading 0x201000... Ok! Reading 0x202000... Ok! Reading 0x203000... Ok! Reading 0x204000... Ok! Reading 0x205000... Ok! Reading 0x206000... Ok! Reading 0x207000... Ok! Reading 0x208000... Ok! Reading 0x209000... Ok! Reading 0x20A000... Ok! Reading 0x20B000... Ok! Reading 0x20C000... Ok! Reading 0x20D000... Ok! Reading 0x20E000... Ok! Reading 0x20F000... Ok! Reading 0x210000... Ok! Reading 0x211000... Ok! Reading 0x212000... Ok! Reading 0x213000... Ok! Reading 0x214000... Ok! Reading 0x215000... Ok! Reading 0x216000... Ok! Reading 0x217000... Ok! Reading 0x218000... Ok! Reading 0x219000... Ok! Reading 0x21A000... Ok! Reading 0x21B000... Ok! Reading 0x21C000... Ok! Reading 0x21D000... Ok! Reading 0x21E000... Ok! Reading 0x21F000... Ok! Reading 0x220000... Ok! Reading 0x221000... Ok! Reading 0x222000... Ok! Reading 0x223000... Ok! Reading 0x224000... Ok! Reading 0x225000... Ok! Reading 0x226000... Ok! Reading 0x227000... Ok! Reading 0x228000... Ok! Reading 0x229000... Ok! Reading 0x22A000... Ok! Reading 0x22B000... Ok! Reading 0x22C000... Ok! Reading 0x22D000... Ok! Reading 0x22E000... Ok! Reading 0x22F000... Ok! Reading 0x230000... Ok! Reading 0x231000... Ok! Reading 0x232000... Ok! Reading 0x233000... Ok! Reading 0x234000... Ok! Reading 0x235000... Ok! Reading 0x236000... Ok! Reading 0x237000... Ok! Reading 0x238000... Ok! Reading 0x239000... Ok! Reading 0x23A000... Ok! Reading 0x23B000... Ok! Reading 0x23C000... Ok! Reading 0x23D000... Ok! Reading 0x23E000... Ok! Reading 0x23F000... Ok! Reading 0x240000... Ok! Reading 0x241000... Ok! Reading 0x242000... Ok! Reading 0x243000... Ok! Reading 0x244000... Ok! Reading 0x245000... Ok! Reading 0x246000... Ok! Reading 0x247000... Ok! Reading 0x248000... Ok! Reading 0x249000... Ok! Reading 0x24A000... Ok! Reading 0x24B000... Ok! Reading 0x24C000... Ok! Reading 0x24D000... Ok! Reading 0x24E000... Ok! Reading 0x24F000... Ok! Reading 0x250000... Ok! Reading 0x251000... Ok! Reading 0x252000... Ok! Reading 0x253000... Ok! Reading 0x254000... Ok! Reading 0x255000... Ok! Reading 0x256000... Ok! Reading 0x257000... Ok! Reading 0x258000... Ok! Reading 0x259000... Ok! Reading 0x25A000... Ok! Reading 0x25B000... Ok! Reading 0x25C000... Ok! Reading 0x25D000... Ok! Reading 0x25E000... Ok! Reading 0x25F000... Ok! Reading 0x260000... Ok! Reading 0x261000... Ok! Reading 0x262000... Ok! Reading 0x263000... Ok! Reading 0x264000... Ok! Reading 0x265000... Ok! Reading 0x266000... Ok! Reading 0x267000... Ok! Reading 0x268000... Ok! Reading 0x269000... Ok! Reading 0x26A000... Ok! Reading 0x26B000... Ok! Reading 0x26C000... Ok! Reading 0x26D000... Ok! Reading 0x26E000... Ok! Reading 0x26F000... Ok! Reading 0x270000... Ok! Reading 0x271000... Ok! Reading 0x272000... Ok! Reading 0x273000... Ok! Reading 0x274000... Ok! Reading 0x275000... Ok! Reading 0x276000... Ok! Reading 0x277000... Ok! Reading 0x278000... Ok! Reading 0x279000... Ok! Reading 0x27A000... Ok! Reading 0x27B000... Ok! Reading 0x27C000... Ok! Reading 0x27D000... Ok! Reading 0x27E000... Ok! Reading 0x27F000... Ok! Reading 0x280000... Ok! Reading 0x281000... Ok! Reading 0x282000... Ok! Reading 0x283000... Ok! Reading 0x284000... Ok! Reading 0x285000... Ok! Reading 0x286000... Ok! Reading 0x287000... Ok! Reading 0x288000... Ok! Reading 0x289000... Ok! Reading 0x28A000... Ok! Reading 0x28B000... Ok!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Basic read operation finished, but now it's time to verify...
Starting CRC check for 1041 sectors, starting at offset 0x11000
CRC matches 0x9B43A2DA!
All read!
Loaded total 0x411000 bytes 
Wrote 4263936 to readResult_BK7252_UA_2025-08-10-17-50-06.bin
Backup created, now will attempt to extract OBK config.
It's not an OBK config, header is bad
OBK config not found.
Backup created, now will attempt to extract Tuya config.
Tuya config extractor - magic is at 3694592 
WARNING - strange nextblock header 3538A983
WARNING - bad nextblock CRC
WARNING - strange nextblock header 62D24236
WARNING - bad nextblock CRC
WARNING - strange nextblock header A31ED44C
WARNING - bad nextblock CRC
WARNING - strange nextblock header FEA94790
WARNING - bad nextblock CRC


    Added after 30 [seconds]:


    Beken BK7231/BK7252 SPI flashing and recovery - new flasher tool and protocol specs

    Added after 5 [minutes]:

    https://github.com/openshwprojects/FlashDumps/commit/b1ca8fa8f9bd579c55d094e290e40abb42099654

    Added after 1 [minutes]:

    This doorbell arrived today. It's probably like the one @divadiow has. It has routed out SPI, but I wanted to try UART. I am unable to read it directly at 0x0 offset, but it seems I managed to read it with wrap-around hack. So , now my binary starts at 0x11000 offset.
    Helpful post? Buy me a coffee.
  • #41 21714327
    insmod
    Level 28  
    Added VERY hacky BL602 write.
    Everything from 0 to 0x10000 is just copied from dump to base64.
    Then app header manipulation (app size, app hash and header crc). Again, originally copied from dump to base64.
    And finally dts - once again just copied from dump to base64.

    Plus i've had to add erase from 0 to 0x1A2000 (lfs addr) before writing just so that it would pass hash check.
  • #42 21714401
    p.kaczmarek2
    Moderator Smart Home  
    Base64? Ah, I see, you've embedded the header part into the flasher iself, and just append the app part? That's what I also considered. So, now it can flash binary from our Releases?

    I'm just curious, why Base64 string instead of byte []
    Helpful post? Buy me a coffee.
  • #43 21714409
    insmod
    Level 28  
    >>21714401
    It can, i've tested 188, 188_berry and 189.

    Because converting to base64 is much easier. Just open a site, drop a binary and press convert.
    Plus base64 is more lightweight compared to byte[]
  • #44 21714427
    p.kaczmarek2
    Moderator Smart Home  
    Hmm interesting, I assume you're referring to C# source, and not to the memory itself (binary size)? I would need to check, I'm not sure.

    Ok, I tried method from the first post with my new camera and it worked with first try.
    Breadboard with DHT sensor and microcontroller connected to a camera module
    https://github.com/openshwprojects/FlashDumps/commit/45a8ecd96d50d4a370edfc7744672095ea7d4c21
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  • #45 21714466
    divadiow
    Level 36  
    p.kaczmarek2 wrote:
    It's probably like the one @divadiow has

    looks the same. nice little dev board
  • #46 21714473
    p.kaczmarek2
    Moderator Smart Home  
    Anything specific to try on that? I am certainly going to create I2C pin-wide scanner...
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  • #47 21714477
    divadiow
    Level 36  
    hmm. dunno. I assume you've got the Tuya OBK running on it OK? There's daniel-dona and Apache02's opencam efforts I guess.
    Here I used unadulterated test pad for some DS18B20 tests to get timings right https://www.elektroda.com/rtvforum/topic4127230-60.html#21620710

    Added after 40 [seconds]:

    p.kaczmarek2 wrote:
    I am certainly going to create I2C pin-wide scanner

    this could very useful, for any platform tbh

    Added after 1 [minutes]:

    You'll have probably noticed that the cam connector isn't the same 18-pin job seen on mini cams.
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Topic summary

BK7231GUIFlashTool version 98 and later introduces a new SPI flashing method for Beken BK7231/BK7252 devices using only a CH341 SPI programmer. This method enables recovery of bricked devices with overwritten bootloaders and functions as a general-purpose SPI flasher supporting various memory chips. The approach builds on previous SPI programming techniques using Python and Banana Pi, adapting them for CH341 hardware and C# implementation. Required hardware includes a CH341 programmer and soldering tools for wire attachment. Recent user feedback on version 98 highlights issues such as the tool requiring a COM port selection in SPI mode, lack of CH341A detection warnings, and missing ch341dll.dll errors. The developer has addressed the COM port requirement and plans to add the missing DLL, requesting further debugging via Visual Studio to handle CH341 initialization exceptions.
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