[Memory Card Detection Failure]
[TAINER may intermittently fail to detect SD or microSD cards, including cards used through adapters. ClouZen specifically documents card-detection problems in its official FAQ.]
ClouZen
Repair, Service, and Parts
Acme Revival is an independent repair network that operates separately from the manufacturers whose devices we service. Our independence enables a repair model that exists beyond manufacturer-controlled strategies, while preserving the ability to work with manufacturers where appropriate.
Hwaseong-si, South Korea
Manuf. Location
≈ US $0.2M
Annual Revenue (est)
Professional Media
End Use Segment
ClouZen Co., Ltd. is a small South Korean electronics OEM specializing in portable data-backup and storage hardware for professional photographers, filmmakers, DITs, and content creators. The company was established around 2020–2021 and was founded by former developers of NextoDI, drawing on their experience developing field backup technology. Its flagship TAINER line provides standalone memory-card-to-SSD and cloud backup for photo/video production workflows, while its newer OFFLOADER 16X is designed for higher-volume on-set media management, allowing multiple memory cards to be copied to USB storage simultaneously. ClouZen also develops the companion Clouder software for device management, cloud connectivity, and file transfer. The company is therefore better characterized as a specialist professional-media storage/backup equipment manufacturer than a general consumer-storage OEM.
2 Most Seen Failures:
[USB Drive Recognition Failure]
[Some external USB drives may not be recognized after being formatted. ClouZen identified and fixed this problem in TAINER firmware v3.20.]
[Copy / Update & Verify Failure]
[The Update & Verify process could fail and leave an UPTMP folder behind, subsequently producing error 0x00020020 when the same memory card was reinserted. ClouZen corrected this behavior in firmware v3.10.]
[SD Card Copy Error]
[Certain SD cards could produce error 0x00040001 while data was being copied. ClouZen specifically corrected this copy failure in firmware v3.00.]
[SSD Compatibility / Detection Failure]
[TAINER requires an M.2 SATA SSD and does not support NVMe SSDs; installing an incompatible NVMe drive results in the storage not functioning as intended. ClouZen added an explicit warning for non-SATA SSD installations after users encountered this problem.]
[Internal SSD Bad Blocks]
[The internal SSD can develop bad blocks detectable through TAINER's Drive Self Test. ClouZen recommends replacing the SSD when the self-test reports these errors.]
[Power-On Failure]
[TAINER may fail to turn on when its internal rechargeable battery is discharged. ClouZen's troubleshooting procedure calls for USB-C charging for at least 10 minutes before attempting to power the unit on again.]
[Power-Off / System Hang Failure]
[A hardware or software malfunction can leave TAINER unable to shut down normally. ClouZen documents an emergency shutdown procedure requiring the control button to be held for at least eight seconds.]
[Verification Failure]
[Backup verification can fail because of file-system or file-metadata conditions; ClouZen specifically fixed verification failures involving files with an mtime value of zero. Independent testing also found that failed operations may expose only an error code rather than a detailed explanation.]
1 Acme Revival offers repair, service, and part rebuild opportunities for most ClouZen devices.
Connect with a technician.
- 1 Repairs are performed on a best-effort basis. Acme Revival utilizes a network of sophisticated technicians and engineers with diverse service offerings; despite this, factors that influence the repair outcome may ultimately prove unsuccessful. Acme Revival makes no claim that it can, guarantee a repair before your device is sent in for diagnostic evaluation; even then, repair and diagnostic work are not mutually exclusive. Despite well-intentioned quoting, repairs may still prove unsuccessful.
- 2 Per information known, researched and collected by Acme Revival and its systems at time of page publishing (September 24, 2026).
- *Information regarding this manufacturer/brand/organization is estimated with information collected and known to Acme Revival. This information is intended to provide insights into the spotlight entity, however may not be accurate— information is strictly of estimate nature only.
- **The model list shown here may not be an all-inclusive list of the EcoFlow product range. Model list has been derived per information known, researched and collected by Acme Revival and its systems for the US market.
