I got an LED driver here that contains a BK7231T.
I read it perfectly fine with the Easy UART Flasher. Afterwards, I wrote the auto-downloaded FW to it.
After verifying, I received a CRC error and the chip is now dead. This happened on two different chips.
It refuses to enter flash mode, regardless of whether I use the CEN pin or power the chip manually.
The chip is clearly a BK7231TQN32, so that SHOULD be the T, right?
The UART adapter used is CP2102 based, I also used an AMS1117 3.3V voltage regulator to power the BK.
Help please?
I read it perfectly fine with the Easy UART Flasher. Afterwards, I wrote the auto-downloaded FW to it.
After verifying, I received a CRC error and the chip is now dead. This happened on two different chips.
It refuses to enter flash mode, regardless of whether I use the CEN pin or power the chip manually.
The chip is clearly a BK7231TQN32, so that SHOULD be the T, right?
The UART adapter used is CP2102 based, I also used an AMS1117 3.3V voltage regulator to power the BK.
Help please?
Starting flash new (no backup)!
Now is: Saturday, October 04, 2025 5:45:40 PM.
Flasher mode: BK7231T
Going to open port: COM7.
Serial port open!
Getting bus... (now, please do reboot by CEN or by power off/on)
Getting bus success!
Going to set baud rate setting (230400)!
Reading file firmwares/OpenBK7231T_UA_1.18.187.bin...
Loaded 978944 bytes from firmwares/OpenBK7231T_UA_1.18.187.bin...
Preparing to write data file to chip - resetting bus and baud...
Getting bus... (now, please do reboot by CEN or by power off/on)
Getting bus success!
Going to set baud rate setting (230400)!
Going to do erase, start 0, sec count 239!
Erasing sector 0... ok! Erasing sector 4096... ok! Erasing sector 8192... ok! Erasing sector 12288... ok! Erasing sector 16384... ok! Erasing sector 20480... ok! Erasing sector 24576... ok! Erasing sector 28672... ok! Erasing sector 32768... ok! Erasing sector 36864... ok! Erasing sector 40960... ok! Erasing sector 45056... ok! Erasing sector 49152... ok! Erasing sector 53248... ok! Erasing sector 57344... ok! Erasing sector 61440... ok! Erasing sector 65536... ok! Erasing sector 69632... ok! Erasing sector 73728... ok! Erasing sector 77824... ok! Erasing sector 81920... ok! Erasing sector 86016... ok! Erasing sector 90112... ok! Erasing sector 94208... ok! Erasing sector 98304... ok! Erasing sector 102400... ok! Erasing sector 106496... ok! Erasing sector 110592... ok! Erasing sector 114688... ok! Erasing sector 118784... ok! Erasing sector 122880... ok! Erasing sector 126976... ok! Erasing sector 131072... ok! Erasing sector 135168... ok! Erasing sector 139264... ok! Erasing sector 143360... ok! Erasing sector 147456... ok! Erasing sector 151552... ok! Erasing sector 155648... ok! Erasing sector 159744... ok! Erasing sector 163840... ok! Erasing sector 167936... ok! Erasing sector 172032... ok! Erasing sector 176128... ok! Erasing sector 180224... ok! Erasing sector 184320... ok! Erasing sector 188416... ok! Erasing sector 192512... ok! Erasing sector 196608... ok! Erasing sector 200704... ok! Erasing sector 204800... ok! Erasing sector 208896... ok! Erasing sector 212992... ok! Erasing sector 217088... ok! Erasing sector 221184... ok! Erasing sector 225280... ok! Erasing sector 229376... ok! Erasing sector 233472... ok! Erasing sector 237568... ok! Erasing sector 241664... ok! Erasing sector 245760... ok! Erasing sector 249856... ok! Erasing sector 253952... ok! Erasing sector 258048... ok! Erasing sector 262144... ok! Erasing sector 266240... ok! Erasing sector 270336... ok! Erasing sector 274432... ok! Erasing sector 278528... ok! Erasing sector 282624... ok! Erasing sector 286720... ok! Erasing sector 290816... ok! Erasing sector 294912... ok! Erasing sector 299008... ok! Erasing sector 303104... ok! Erasing sector 307200... ok! Erasing sector 311296... ok! Erasing sector 315392... ok! Erasing sector 319488... ok! Erasing sector 323584... ok! Erasing sector 327680... ok! Erasing sector 331776... ok! Erasing sector 335872... ok! Erasing sector 339968... ok! Erasing sector 344064... ok! Erasing sector 348160... ok! Erasing sector 352256... ok! Erasing sector 356352... ok! Erasing sector 360448... ok! Erasing sector 364544... ok! Erasing sector 368640... ok! Erasing sector 372736... ok! Erasing sector 376832... ok! Erasing sector 380928... ok! Erasing sector 385024... ok! Erasing sector 389120... ok! Erasing sector 393216... ok! Erasing sector 397312... ok! Erasing sector 401408... ok! Erasing sector 405504... ok! Erasing sector 409600... ok! Erasing sector 413696... ok! Erasing sector 417792... ok! Erasing sector 421888... ok! Erasing sector 425984... ok! Erasing sector 430080... ok! Erasing sector 434176... ok! Erasing sector 438272... ok! Erasing sector 442368... ok! Erasing sector 446464... ok! Erasing sector 450560... ok! Erasing sector 454656... ok! Erasing sector 458752... ok! Erasing sector 462848... ok! Erasing sector 466944... ok! Erasing sector 471040... ok! Erasing sector 475136... ok! Erasing sector 479232... ok! Erasing sector 483328... ok! Erasing sector 487424... ok! Erasing sector 491520... ok! Erasing sector 495616... ok! Erasing sector 499712... ok! Erasing sector 503808... ok! Erasing sector 507904... ok! Erasing sector 512000... ok! Erasing sector 516096... ok! Erasing sector 520192... ok! Erasing sector 524288... ok! Erasing sector 528384... ok! Erasing sector 532480... ok! Erasing sector 536576... ok! Erasing sector 540672... ok! Erasing sector 544768... ok! Erasing sector 548864... ok! Erasing sector 552960... ok! Erasing sector 557056... ok! Erasing sector 561152... ok! Erasing sector 565248... ok! Erasing sector 569344... ok! Erasing sector 573440... ok! Erasing sector 577536... ok! Erasing sector 581632... ok! Erasing sector 585728... ok! Erasing sector 589824... ok! Erasing sector 593920... ok! Erasing sector 598016... ok! Erasing sector 602112... ok! Erasing sector 606208... ok! Erasing sector 610304... ok! Erasing sector 614400... ok! Erasing sector 618496... ok! Erasing sector 622592... ok! Erasing sector 626688... ok! Erasing sector 630784... ok! Erasing sector 634880... ok! Erasing sector 638976... ok! Erasing sector 643072... ok! Erasing sector 647168... ok! Erasing sector 651264... ok! Erasing sector 655360... ok! Erasing sector 659456... ok! Erasing sector 663552... ok! Erasing sector 667648... ok! Erasing sector 671744... ok! Erasing sector 675840... ok! Erasing sector 679936... ok! Erasing sector 684032... ok! Erasing sector 688128... ok! Erasing sector 692224... ok! Erasing sector 696320... ok! Erasing sector 700416... ok! Erasing sector 704512... ok! Erasing sector 708608... ok! Erasing sector 712704... ok! Erasing sector 716800... ok! Erasing sector 720896... ok! Erasing sector 724992... ok! Erasing sector 729088... ok! Erasing sector 733184... ok! Erasing sector 737280... ok! Erasing sector 741376... ok! Erasing sector 745472... ok! Erasing sector 749568... ok! Erasing sector 753664... ok! Erasing sector 757760... ok! Erasing sector 761856... ok! Erasing sector 765952... ok! Erasing sector 770048... ok! Erasing sector 774144... ok! Erasing sector 778240... ok! Erasing sector 782336... ok! Erasing sector 786432... ok! Erasing sector 790528... ok! Erasing sector 794624... ok! Erasing sector 798720... ok! Erasing sector 802816... ok! Erasing sector 806912... ok! Erasing sector 811008... ok! Erasing sector 815104... ok! Erasing sector 819200... ok! Erasing sector 823296... ok! Erasing sector 827392... ok! Erasing sector 831488... ok! Erasing sector 835584... ok! Erasing sector 839680... ok! Erasing sector 843776... ok! Erasing sector 847872... ok! Erasing sector 851968... ok! Erasing sector 856064... ok! Erasing sector 860160... ok! Erasing sector 864256... ok! Erasing sector 868352... ok! Erasing sector 872448... ok! Erasing sector 876544... ok! Erasing sector 880640... ok! Erasing sector 884736... ok! Erasing sector 888832... ok! Erasing sector 892928... ok! Erasing sector 897024... ok! Erasing sector 901120... ok! Erasing sector 905216... ok! Erasing sector 909312... ok! Erasing sector 913408... ok! Erasing sector 917504... ok! Erasing sector 921600... ok! Erasing sector 925696... ok! Erasing sector 929792... ok! Erasing sector 933888... ok! Erasing sector 937984... ok! Erasing sector 942080... ok! Erasing sector 946176... ok! Erasing sector 950272... ok! Erasing sector 954368... ok! Erasing sector 958464... ok! Erasing sector 962560... ok! Erasing sector 966656... ok! Erasing sector 970752... ok! Erasing sector 974848... ok!
All selected sectors erased!
Going to do erase, start 1970176, sec count 1!
Erasing sector 1970176... ok!
All selected sectors erased!
Writing sector 0x200000... ok! Writing sector 0x201000... ok! Writing sector 0x202000... ok! Writing sector 0x203000... ok! Writing sector 0x204000... ok! Writing sector 0x205000... ok! Writing sector 0x206000... ok! Writing sector 0x207000... ok! Writing sector 0x208000... ok! Writing sector 0x209000... ok! Writing sector 0x20A000... ok! Writing sector 0x20B000... ok! Writing sector 0x20C000... ok! Writing sector 0x20D000... ok! Writing sector 0x20E000... ok! Writing sector 0x20F000... ok! Writing sector 0x210000... ok! Writing sector 0x211000... ok! Writing sector 0x212000... ok! Writing sector 0x213000... ok! Writing sector 0x214000... ok! Writing sector 0x215000... ok! Writing sector 0x216000... ok! Writing sector 0x217000... ok! Writing sector 0x218000... ok! Writing sector 0x219000... ok! Writing sector 0x21A000... ok! Writing sector 0x21B000... ok! Writing sector 0x21C000... ok! Writing sector 0x21D000... ok! Writing sector 0x21E000... ok! Writing sector 0x21F000... ok! Writing sector 0x220000... ok! Writing sector 0x221000... ok! Writing sector 0x222000... ok! Writing sector 0x223000... ok! Writing sector 0x224000... ok! Writing sector 0x225000... ok! Writing sector 0x226000... ok! Writing sector 0x227000... ok! Writing sector 0x228000... ok! Writing sector 0x229000... ok! Writing sector 0x22A000... ok! Writing sector 0x22B000... ok! Writing sector 0x22C000... ok! Writing sector 0x22D000... ok! Writing sector 0x22E000... ok! Writing sector 0x22F000... ok! Writing sector 0x230000... ok! Writing sector 0x231000... ok! Writing sector 0x232000... ok! Writing sector 0x233000... ok! Writing sector 0x234000... ok! Writing sector 0x235000... ok! Writing sector 0x236000... ok! Writing sector 0x237000... ok! Writing sector 0x238000... ok! Writing sector 0x239000... ok! Writing sector 0x23A000... ok! Writing sector 0x23B000... ok! Writing sector 0x23C000... ok! Writing sector 0x23D000... ok! Writing sector 0x23E000... ok! Writing sector 0x23F000... ok! Writing sector 0x240000... ok! Writing sector 0x241000... ok! Writing sector 0x242000... ok! Writing sector 0x243000... ok! Writing sector 0x244000... ok! Writing sector 0x245000... ok! Writing sector 0x246000... ok! Writing sector 0x247000... ok! Writing sector 0x248000... ok! Writing sector 0x249000... ok! Writing sector 0x24A000... ok! Writing sector 0x24B000... ok! Writing sector 0x24C000... ok! Writing sector 0x24D000... ok! Writing sector 0x24E000... ok! Writing sector 0x24F000... ok! Writing sector 0x250000... ok! Writing sector 0x251000... ok! Writing sector 0x252000... ok! Writing sector 0x253000... ok! Writing sector 0x254000... ok! Writing sector 0x255000... ok! Writing sector 0x256000... ok! Writing sector 0x257000... ok! Writing sector 0x258000... ok! Writing sector 0x259000... ok! Writing sector 0x25A000... ok! Writing sector 0x25B000... ok! Writing sector 0x25C000... ok! Writing sector 0x25D000... ok! Writing sector 0x25E000... ok! Writing sector 0x25F000... ok! Writing sector 0x260000... ok! Writing sector 0x261000... ok! Writing sector 0x262000... ok! Writing sector 0x263000... ok! Writing sector 0x264000... ok! Writing sector 0x265000... ok! Writing sector 0x266000... ok! Writing sector 0x267000... ok! Writing sector 0x268000... ok! Writing sector 0x269000... ok! Writing sector 0x26A000... ok! Writing sector 0x26B000... ok! Writing sector 0x26C000... ok! Writing sector 0x26D000... ok! Writing sector 0x26E000... ok! Writing sector 0x26F000... ok! Writing sector 0x270000... ok! Writing sector 0x271000... ok! Writing sector 0x272000... ok! Writing sector 0x273000... ok! Writing sector 0x274000... ok! Writing sector 0x275000... ok! Writing sector 0x276000... ok! Writing sector 0x277000... ok! Writing sector 0x278000... ok! Writing sector 0x279000... ok! Writing sector 0x27A000... ok! Writing sector 0x27B000... ok! Writing sector 0x27C000... ok! Writing sector 0x27D000... ok! Writing sector 0x27E000... ok! Writing sector 0x27F000... ok! Writing sector 0x280000... ok! Writing sector 0x281000... ok! Writing sector 0x282000... ok! Writing sector 0x283000... ok! Writing sector 0x284000... ok! Writing sector 0x285000... ok! Writing sector 0x286000... ok! Writing sector 0x287000... ok! Writing sector 0x288000... ok! Writing sector 0x289000... ok! Writing sector 0x28A000... ok! Writing sector 0x28B000... ok! Writing sector 0x28C000... ok! Writing sector 0x28D000... ok! Writing sector 0x28E000... ok! Writing sector 0x28F000... ok! Writing sector 0x290000... ok! Writing sector 0x291000... ok! Writing sector 0x292000... ok! Writing sector 0x293000... ok! Writing sector 0x294000... ok! Writing sector 0x295000... ok! Writing sector 0x296000... ok! Writing sector 0x297000... ok! Writing sector 0x298000... ok! Writing sector 0x299000... ok! Writing sector 0x29A000... ok! Writing sector 0x29B000... ok! Writing sector 0x29C000... ok! Writing sector 0x29D000... ok! Writing sector 0x29E000... ok! Writing sector 0x29F000... ok! Writing sector 0x2A0000... ok! Writing sector 0x2A1000... ok! Writing sector 0x2A2000... ok! Writing sector 0x2A3000... ok! Writing sector 0x2A4000... ok! Writing sector 0x2A5000... ok! Writing sector 0x2A6000... ok! Writing sector 0x2A7000... ok! Writing sector 0x2A8000... ok! Writing sector 0x2A9000... ok! Writing sector 0x2AA000... ok! Writing sector 0x2AB000... ok! Writing sector 0x2AC000... ok! Writing sector 0x2AD000... ok! Writing sector 0x2AE000... ok! Writing sector 0x2AF000... ok! Writing sector 0x2B0000... ok! Writing sector 0x2B1000... ok! Writing sector 0x2B2000... ok! Writing sector 0x2B3000... ok! Writing sector 0x2B4000... ok! Writing sector 0x2B5000... ok! Writing sector 0x2B6000... ok! Writing sector 0x2B7000... ok! Writing sector 0x2B8000... ok! Writing sector 0x2B9000... ok! Writing sector 0x2BA000... ok! Writing sector 0x2BB000... ok! Writing sector 0x2BC000... ok! Writing sector 0x2BD000... ok! Writing sector 0x2BE000... ok! Writing sector 0x2BF000... ok! Writing sector 0x2C0000... ok! Writing sector 0x2C1000... ok! Writing sector 0x2C2000... ok! Writing sector 0x2C3000... ok! Writing sector 0x2C4000... ok! Writing sector 0x2C5000... ok! Writing sector 0x2C6000... ok! Writing sector 0x2C7000... ok! Writing sector 0x2C8000... ok! Writing sector 0x2C9000... ok! Writing sector 0x2CA000... ok! Writing sector 0x2CB000... ok! Writing sector 0x2CC000... ok! Writing sector 0x2CD000... ok! Writing sector 0x2CE000... ok! Writing sector 0x2CF000... ok! Writing sector 0x2D0000... ok! Writing sector 0x2D1000... ok! Writing sector 0x2D2000... ok! Writing sector 0x2D3000... ok! Writing sector 0x2D4000... ok! Writing sector 0x2D5000... ok! Writing sector 0x2D6000... ok! Writing sector 0x2D7000... ok! Writing sector 0x2D8000... ok! Writing sector 0x2D9000... ok! Writing sector 0x2DA000... ok! Writing sector 0x2DB000... ok! Writing sector 0x2DC000... ok! Writing sector 0x2DD000... ok! Writing sector 0x2DE000... ok! Writing sector 0x2DF000... ok! Writing sector 0x2E0000... ok! Writing sector 0x2E1000... ok! Writing sector 0x2E2000... ok! Writing sector 0x2E3000... ok! Writing sector 0x2E4000... ok! Writing sector 0x2E5000... ok! Writing sector 0x2E6000... ok! Writing sector 0x2E7000... ok! Writing sector 0x2E8000... ok! Writing sector 0x2E9000... ok! Writing sector 0x2EA000... ok! Writing sector 0x2EB000... ok! Writing sector 0x2EC000... ok! Writing sector 0x2ED000... ok! Writing sector 0x2EE000... ok! Starting CRC check for 239 sectors, starting at offset 0x00
failed with serial.BytesToRead 0 (expected 11)
The beginning of buffer in UART contains data.
CRC mismatch!
Send by BK 0x00, our CRC 0x57D23905
Maybe you have wrong chip type set?
Did you set BK7231T but have in reality BK7231N or BK7231M?
Writing file data to chip failed.
Starting flash new (no backup)!
Now is: Saturday, October 04, 2025 5:48:54 PM.
Flasher mode: BK7231N
Going to open port: COM7.
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 failed, will try again - 1/100!
