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SSD Data Recovery

SanDisk Extreme/Extreme Pro Portable Data RecoverySanDisk Extreme Portable V2 (2TB, 4TB) / SanDisk Extreme Pro Portable (2TB, 4TB)

The SanDisk Extreme and Extreme Pro Portable SSDs have been subject to class-action lawsuits (filed August 2023) over sudden data loss. Root cause analysis by Attingo Data Recovery identified hardware design and manufacturing flaws, not firmware. Firmware revision R332G190 worsened reliability. We recover SanDisk Extreme/Extreme Pro Portable-based SSDs using our PC-3000 system's SanDisk-specific firmware tools at our Austin lab.

Louis Rossmann
Written by
Louis Rossmann
Founder & Chief Technician
Updated February 2026
5 min read

SanDisk Extreme/Extreme Pro Portable Technical Details

The SanDisk Extreme and Extreme Pro Portable SSDs have been subject to class-action lawsuits (filed August 2023) over sudden data loss. Root cause analysis by Attingo Data Recovery identified hardware design and manufacturing flaws, not firmware. Firmware revision R332G190 worsened reliability.

SanDisk Extreme/Extreme Pro Portable Specifications

Manufacturer
SanDisk
Interface
USB Bridge
DRAM Cache
No (HMB)
Channels
4-channel
NAND Types
3D TLC

Can bypass failed controllers to access NAND. Chip-off viable as last resort.

Recovery Feasibility

PC-3000 Supported
Chip-Off Viable

Can bypass failed controllers to access NAND. Chip-off viable as last resort.

Drives Using the SanDisk Extreme/Extreme Pro Portable

The following consumer SSDs use the SanDisk Extreme/Extreme Pro Portable. If your drive is on this list, the failure modes and recovery approaches described on this page apply to your situation.

SanDisk Extreme/Extreme Pro Portable Drive Models

SanDisk Extreme Portable V2 (2TB, 4TB)SanDisk Extreme Pro Portable (2TB, 4TB)

2 models affected

Failure Modes

Each failure mode has a different root cause and requires a different recovery approach. Identifying the correct failure mode is the first step in any recovery.

Sudden 'unreadable' error

Hardware design and manufacturing flaws (solder quality, structural integrity). Class-action lawsuits filed August 2023. Firmware R332G190 worsened reliability.

Symptoms you may notice

  • Disk not readable error
  • Drive suddenly not detected
  • Data loss without warning

Related search terms

SanDisk Extreme data lossSanDisk Extreme not readableSanDisk class actionSanDisk Extreme Pro failure

Firmware R332G190 reliability issues

Firmware revision R332G190 worsened reliability. Root cause identified as hardware design and manufacturing flaws by Attingo Data Recovery.

Symptoms you may notice

  • Drive fails after firmware update
  • Intermittent disconnection
  • Drive not recognized by computer

Related search terms

SanDisk Extreme firmwareSanDisk R332G190SanDisk Extreme recall

How We Recover SanDisk Extreme/Extreme Pro Portable SSDs

Firmware-Level Recovery

We recover SanDisk Extreme/Extreme Pro Portable-based SSDs using the PC-3000 SSD system with the SanDisk Active Utility. This provides direct access to the controller's diagnostic interface for firmware repair and FTL (Flash Translation Layer) reconstruction.

Firmware-level access preserves the NAND chip layout and avoids the complications of chip-off recovery. For most SanDisk Extreme/Extreme Pro Portable failures, this is the primary recovery path.

Chip-Off Recovery

If the controller is dead and firmware-level access fails, we can desolder the NAND chips and read them directly. The SanDisk Extreme/Extreme Pro Portable uses a NAND encoding that our tools can reconstruct, making chip-off a viable last resort.

Can bypass failed controllers to access NAND. Chip-off viable as last resort.

Pricing

SSD firmware and logical recovery for the SanDisk Extreme/Extreme Pro Portable typically costs $300 to $500. Controller-level failures requiring advanced diagnostics are $500 to $1,500. Chip-off recovery, when viable, is $1,500 to $2,500.

See our full pricing breakdown for details. Our No Data, No Fee guarantee means you pay nothing if we cannot recover your files.

Hard Drive Data Recovery Standards & Verification

Our Austin lab operates on a transparency-first model. We use industry-standard recovery tools, including PC-3000 and DeepSpar, combined with strict environmental controls to make sure your hard drive is handled safely and properly. This approach allows us to serve clients nationwide with consistent technical standards.

Open-drive work is performed in a laminar-flow bench filtered to 0.02 µm, verified using TSI P-Trak instrumentation.

Transparent History

Serving clients nationwide via mail-in service since 2008.

Media Coverage

Our repair work has been covered by The Wall Street Journal and Business Insider, with CBC News reporting on our pricing transparency. Louis Rossmann has testified in Right to Repair hearings in multiple states and founded the Repair Preservation Group.

Aligned Incentives

Our "No Data, No Charge" policy means we assume the risk of the recovery attempt, not the client.

LR

Louis Rossmann

Louis Rossmann's well trained staff review our lab protocols to ensure technical accuracy and honest service. Since 2008, his focus has been on clear technical communication and accurate diagnostics rather than sales-driven explanations.

We believe in proving standards rather than just stating them. We use TSI P-Trak instrumentation to verify that clean-air benchmarks are met before any drive is opened.

See our clean bench validation data and particle test video

Frequently Asked Questions

Is the SanDisk Extreme Portable SSD subject to a class-action lawsuit?
Yes. Class-action lawsuits were filed in August 2023 over sudden data loss in SanDisk Extreme and Extreme Pro Portable SSDs, particularly the 2TB and 4TB V2 models. Root cause analysis by Attingo Data Recovery identified hardware design and manufacturing flaws, including solder quality and structural integrity issues, as the primary cause rather than firmware alone.
What is the R332G190 firmware issue on SanDisk Extreme drives?
Firmware revision R332G190 was identified as worsening reliability on already-flawed hardware. The firmware update was intended to address failure rates but did not resolve the underlying hardware design problems. Some drives failed shortly after the firmware update was applied. If your drive is still functional, we recommend backing up all data before applying any firmware updates.
My SanDisk Extreme shows 'disk not readable' error. Can you recover it?
The 'disk not readable' error is the most common symptom we see with these drives. It means the USB bridge controller or the internal SSD has failed. We open the enclosure to determine whether the failure is in the bridge chip or the SSD itself. If the bridge failed but the SSD is intact, we can read the NAND directly. If the SSD controller failed, we use PC-3000 or chip-off as needed.
Should I keep using my SanDisk Extreme Portable if it still works?
Given the documented hardware design flaws and the class-action lawsuit, we recommend keeping a backup of anything stored on a SanDisk Extreme or Extreme Pro Portable. These drives can fail without warning due to the structural and solder quality issues identified in the root cause analysis. The failure is often sudden and complete, with no SMART warnings beforehand because the USB interface does not pass through SMART data.
How much does SanDisk Extreme Portable data recovery cost?
Recovery costs $300-$1,500. Bridge chip failures where the SSD is intact are $300-$500. Cases where the internal SSD controller has failed and requires PC-3000 firmware repair are $500-$900. Chip-off recovery for drives with severe controller damage is $900-$1,500. No data recovered means no charge.

Not an SSD issue? We also recover hard drives, RAID arrays, and iPhones.

SSD Recovery Overview →

Nationwide Mail-In Data Recovery Service

We serve all 50 states with secure mail-in data recovery. Ship your failed drive to our Austin lab using our free shipping kit, and we'll diagnose it within 24-48 hours. No geographic limitations—we've successfully recovered data for customers from Alaska to Florida.

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SanDisk Extreme/Extreme Pro Portable SSD not working?

Ship it to our Austin lab for a free evaluation. No data, no charge.