SSD Data Recovery
Phison PS5021-E21T Data RecoverySabrent Rocket 2230 / Corsair MP600 Mini/Core / Crucial P3/P3 Plus
The Phison PS5021-E21T is a widely used controller in M.2 2230 SSDs, commonly used as an aftermarket upgrade in Steam Deck, ROG Ally, and Surface Pro devices. A reproducible data loss bug affecting 1TB 2230 models was confirmed by Phison after discovery by PCPartPicker in July 2023. Our Austin lab uses board-level diagnostics and NAND-level techniques for Phison PS5021-E21T recovery.
Phison PS5021-E21T Technical Details
The Phison PS5021-E21T is a widely used controller in M.2 2230 SSDs, commonly used as an aftermarket upgrade in Steam Deck, ROG Ally, and Surface Pro devices. A reproducible data loss bug affecting 1TB 2230 models was confirmed by Phison after discovery by PCPartPicker in July 2023.
Phison PS5021-E21T Specifications
- Manufacturer
- Phison
- Interface
- NVMe Gen4
- DRAM Cache
- No (HMB)
- Channels
- 4-channel
- NAND Types
- 3D TLC3D QLC
PC-3000 support under development. DRAM-less HMB design. Critical for M.2 2230 drives in Steam Deck, ROG Ally, and Surface Pro.
Recovery Feasibility
PC-3000 support under development. DRAM-less HMB design. Critical for M.2 2230 drives in Steam Deck, ROG Ally, and Surface Pro.
Drives Using the Phison PS5021-E21T
The following consumer SSDs use the Phison PS5021-E21T. If your drive is on this list, the failure modes and recovery approaches described on this page apply to your situation.
Phison PS5021-E21T Drive Models
5 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.
Permanent data loss bug
Reproducible permanent data loss bug discovered by PCPartPicker. Data written without errors becomes permanently unreadable on 1TB 2230 models on PCIe 4.0 capable platforms (the bug does not reproduce at PCIe 3.0 speeds). Phison acknowledged. Data lost to this specific bug is completely unrecoverable, as the controller actively mismanaged write operations and permanently destroyed the data structure.
Symptoms you may notice
- Data silently corrupted
- Files unreadable after writing
- Drive appears healthy but data is gone
Related search terms
Firmware failure
0MB detection, firmware corruption, RAW partitions, BSOD. Common in aftermarket 2230 SSD upgrades for Steam Deck, ROG Ally, and Surface Pro.
Symptoms you may notice
- SSD shows 0MB
- RAW partition
- BSOD on boot
- Steam Deck not booting
Related search terms
How We Recover Phison PS5021-E21T SSDs
Firmware-Level Recovery
The PC-3000 does not yet have full Active Utility support for the Phison PS5021-E21T. Recovery relies on manufacturer-specific diagnostic modes, service pin access, and NAND-level techniques.
We monitor PC-3000 firmware updates for new controller support. When utility support becomes available, firmware-level recovery will be the preferred path for this controller.
Chip-Off Recovery
Chip-off is not viable for the Phison PS5021-E21T due to hardware encryption or architectural limitations. Recovery depends on accessing the controller through firmware-level tools or manufacturer diagnostic modes.
PC-3000 support under development. DRAM-less HMB design. Critical for M.2 2230 drives in Steam Deck, ROG Ally, and Surface Pro.
Pricing
SSD recovery for Phison PS5021-E21T drives follows our published pricing: $200 for simple copies up to $1,200–$1,500 for complex component repair or advanced board rebuilds. File system recovery starts at $250. PCB repair is $600–$900. Firmware corruption is $900–$1,200. Free evaluation, firm quote before work begins.
See our full pricing breakdown for details. Our No Data, No Fee guarantee means you pay nothing if we cannot recover your files.
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 ULPA-filtered laminar-flow bench, validated to 0.02 µm particle count, verified using TSI P-Trak instrumentation.
Transparent History
Serving clients nationwide via mail-in service since 2008. Our lead engineer holds PC-3000 and HEX Akademia certifications for hard drive firmware repair and mechanical recovery.
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.
Technical Oversight
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 videoFrequently Asked Questions
What is the PCPartPicker data loss bug on Phison E21T drives?
Can you recover data from a Steam Deck SSD?
Why is the M.2 2230 form factor harder to recover?
My E21T SSD shows 0MB capacity. What does that mean?
How much does Phison E21T 2230 SSD recovery cost?
Other Phison Controllers
We also recover SSDs using these Phison controllers.
Phison PS3111-S11
SATASATAFIRM S11 firmware lockout
9 affected drive models
Phison PS3110-S10
SATAFTL corruption
4 affected drive models
Phison PS5012-E12
NVMe Gen3Firmware corruption from power loss
5 affected drive models
Phison PS5016-E16
NVMe Gen4Firmware Corruption from Thermal Stress
5 affected drive models
Phison PS5018-E18
NVMe Gen4Firmware Panic / Controller Lockup
7 affected drive models
Phison PS5027-E27T
NVMe Gen4HMB allocation failure
2 affected drive models
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.
Popular Service Areas
Phison PS5021-E21T SSD not working?
Ship it to our Austin lab for a free evaluation. No data, no charge.