Toshiba 24P2300EV V28A001473B1 SPI Dump Panel Matching, Flash Chip, Firmware Issues

User question

Toshiba 24P2300EV V28A001473B1 Dump.

Artificial Intelligence Response

Direct answer to the question

• You’re asking for the SPI flash/EEPROM “dump” (binary image) for a Toshiba 24P2300EV using mainboard V28A001473B1 (often labeled PE1128).
• I can’t supply copyrighted firmware files, but I can help you:
  • Positively identify the correct dump for your exact hardware (panel + board).
  • Verify whether a dump is truly needed.
  • Program, adapt, or recover your original data to avoid panel/HDCP issues.
• If you already have a candidate dump, I can validate it and explain how to merge your unit‑specific data.

Key points

• Board: V28A001473B1 (PE1128 family); flash typically Winbond/MXIC/GD 25‑series (size varies by build, commonly 32/64/128 Mbit).
• A “random” dump from same board but different panel will often boot but show wrong colors, inverted image, or no video.
• Always back up your original chip first to preserve panel table, EDID, MAC, and HDCP keys.

Detailed problem analysis

1) When do you really need a dump?

• Typical firmware corruption symptoms:
  • Standby LED only, no boot; logo loop/reboot; OSD glitches; sound without picture after a failed update.
• Symptoms that are NOT fixed by a dump:
  • No backlight with BL_ON/PWM missing from PSU/inverter section.
  • No panel VGL/VGH/AVDD (panel/T‑Con side fault).
  • Dead 3.3 V/1.8 V rails or shorted SoC/RAM.

2) Hardware verification (before flashing)

• Measure on the main board:
  • 5 V STBY present and stable.
  • 3.3 V (SPI, I/O), 1.8 V and/or 1.2 V (SoC core) stable during power‑on.
  • SPI /CS, CLK, DO, DI toggling at power‑up (scope or logic probe).
• If rails are missing or there’s no SPI activity, fix hardware first—flashing won’t help.

3) Identify the exact memory device

• Locate Ux (8‑pin SOIC near SoC or tuner). Common parts: W25Q32/64/128 or MX25L32/64/128.
• Note the full marking to select the correct programmer algorithm and to know expected image size:
  • 25Q32 = 4,194,304 bytes
  • 25Q64 = 8,388,608 bytes
  • 25Q128 = 16,777,216 bytes

4) Why panel matching matters

• Even on the same V28A001473B1, Toshiba paired different panels (Innolux/AUO/Samsung). The dump embeds:
  • LVDS map (VESA/JEIDA), bit depth (6/8‑bit), 1 or 2‑lane LVDS, lane swap.
  • Panel power sequencing and backlight parameters.
• A mismatched dump boots but yields:
  • Solarized/negative colors, washed image, “ghost” picture, or black screen.
  • Wrong keys for region options and remote codes.

5) Recovering and adapting data

• Always read and save your original chip content first (even if corrupt). Many units keep:
  • HDCP key blocks and MAC address in NVRAM region.
  • Panel table and option bytes separate from the main application partition.
• If you must use a donor dump:
  • Merge your unit‑specific NVRAM/option areas into the donor image (offsets vary; see practical guidelines below).
  • After first boot, use service menu to select the exact panel and reload EDID if required.

Current information and trends

• V28A001473B1 is commonly referenced as PE1128 in repair forums and dump indexes; technicians often share per‑panel variants. Online reports show that cross‑model dumps (e.g., from 29/32‑inch sets using the same PE1128 board) can boot but usually require panel re‑selection to fix image artifacts.
• Trend in field repairs: keep a “clean” base image per SoC family, then transplant original NVRAM/keys to maintain HDCP/CEC and networking IDs. Low‑cost programmers (CH341A/TL866II) are typically sufficient for 3.3 V SPI; for in‑circuit reliability, many techs desolder.

Supporting explanations and details

• Typical image layout on MStar/MediaTek style TVs (indicative, varies by build):
  • 0x000000–0x0FFFFF: bootloader + secondary boot
  • 0x100000–…: main application
  • Top region: NVM/option bytes/panel table/EDID clones
• Practical tell‑tales:
  • If the file size doesn’t match your chip capacity exactly, it’s the wrong image (or truncated).
  • If verify fails at the same address repeatedly, check power to the chip, use slower SPI speed, or program off‑board.

Ethical and legal aspects

• Firmware and dumps are copyrighted. Distributing vendor images may violate IP laws. Handle only your own unit’s backup or use authorized sources.
• HDCP keys are device‑unique and protected content keys—do not publish or share them.
• Respect regional compliance (e.g., FCC/CE) and ensure any modification keeps original RF parameters and safety settings.

Practical guidelines

• Tools
  • Programmer: TL866II‑Plus, CH341A (with 3.3 V adapter), RT809H/F for ISP.
  • Accessories: SOIC8 clip plus quality leads, hot air + flux if you desolder, isopropyl for cleanup.
• Safe read/write workflow 1) Disconnect TV from mains, discharge rails. 2) Prefer desoldering Ux for a clean read. If clipping in‑circuit, pull standby 5 V and ensure no board power. 3) Read chip 2–3 times, compare hashes; keep all backups. 4) If using a donor dump, open both images in a hex editor:
  • Identify repeating ASCII blocks (option bytes), EDID‑like 128‑byte structures, and tail NVRAM blocks near the top of memory.
  • Copy your unit’s option/NVRAM regions into the donor image; keep bootloader/app from the donor. 5) Erase → program → verify. 6) First power‑up: enter service/factory menu and set panel.
• Service/factory access (typical Toshiba sequences; may vary)
  • INPUT → 2 5 8 0
  • MENU → 1 1 4 7
  • On some remotes: MUTE → 1 8 2 → POWER
• After flash, if image is wrong:
  • Toggle LVDS map (VESA/JEIDA), bit depth, and mirror/flip.
  • Confirm backlight dimming curve and BL_ON polarity.

Possible disclaimers or additional notes

• Without your panel model and exact flash part number, no single “correct” dump can be guaranteed.
• Some sets in this family use 25Q128 while others use 25Q64; using the wrong‑sized image will brick the boot.
• If the SoC BGA has intermittent joints, firmware reflash won’t resolve boot loops—reball/reflow evaluation may be necessary.

Suggestions for further research

• Provide:
  • Panel sticker/model (e.g., M236…, V236…, CLAA…, etc.).
  • Flash chip full marking.
  • Measured rails and boot behavior (LED states, any logo, backlight status).
• With that, I can:
  • Point you to the closest known‑good image for that exact panel + board.
  • Outline the exact offsets for NVRAM/option migration in your case.
  • Help with post‑flash service menu navigation.

Brief summary

• For Toshiba 24P2300EV with V28A001473B1 (PE1128), use a panel‑matched SPI dump and always preserve your unit’s NVRAM/keys. Verify hardware rails first, back up the original flash, and, if using a donor image, transplant unit‑specific data and finalize via service menu panel configuration. Share your panel ID and flash chip details, and I’ll guide you to a safe, working solution step‑by‑step.

Disclaimer: The responses provided by artificial intelligence (language model) may be inaccurate and misleading. Elektroda is not responsible for the accuracy, reliability, or completeness of the presented information. All responses should be verified by the user.