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Factory/bootrom mode (HUAWEI USB COM 1.0) service functions are now available on Huawei phones with HarmonyOS!
Here are some of our most used factory/bootrom mode functions:
FRP and Huawei ID Remove
Modify OEMInfo (Vendor/Country, Disable FW version check, ...)
Load Factory Fastboot (partially supported; updates in progress)
And many more...
Supported CPUs: Kirin 710/710A/710F, 810/820, 980/985, 990/990 5G
To make this work, you need a modified USB cable. Follow our
We have added over 150 new Qualcomm EDL programmers to support many devices. Tested and working on the following models but these programmers should cover many more phones! (TP is required)
Added support for Remove Huawei ID procedure (from bootrom mode), for all Huawei phones with MTK CPUs. Here is a list of a few famous models that are now supported:
Huawei: added Modify Oeminfo procedure for MTK phones
Core: improved stability of the firmware unpacker (used during procedures and in the utility section too)
Bugfixes:
Huawei: fixed a bug in Remove Huawei ID for MTK phones (previously it was unable to add screenlock/pinlock/fingerprint lock after a Huawei ID remove) [please let us know if it works]
Core: fixed a UI glitch when a connected phone doesn't have any procedures
LG: fixed a bug when doing Firmware Update from a KDZ file
We added a new, bootrom mode function to patch IMEI1 & IMEI2 for MTK Xiaomi phones with MT67XX series CPUs.
As always, your feedback is welcome! Tested and working on the following known models:
added support for SAR (System As Root) models (SM-A107F, SM-A107M, SM-M017F)
now we save NVDATA and NVRAM during Repair IMEI & Patch Cert procedures so you can restore the phone to its pre-procedure state using the Store/Restore Backup function (if something went wrong)
New features and improvements:
MTK: now we can change MEID for Vivo phones with MTK SoCs (by the Repair IMEI procedure)
MTK: improved hosting of dynamic contents for better download experience
Now the Patch IMEI procedure works on MIUI 13 for all MTK SoCs.
Pre-root is not required
It's not required anymore to pre-root your phone with Magisk to make the procedure work. But we kept the "Disable boot patching" option on the panel, so you can still use it for pre-rooted phones.
Known issues
According to our research the IMEI patch is removed after a factory reset. In a worst case it can cause the phone to unable to boot up and shows the "NV data is corrupted" error on the screen. In case of this error you must reflash the phone with a suitable firmware and the error will be gone. After that you can re-run the Patch IMEI procedure to re-establish the patching.
Samsung: added Phone Info procedure for devices connected in modem mode (when adb/normal mode is not available)
Root: we've updated the rooting mechanism, which could potentially increase the success rate of Qualcomm and MTK Root procedures (further developments are coming soon)
Huawei: added a new warning message for Huawei ID & FRP Remove procedure when we can't start the Factory Reset automatically
Core: now we're suggesting a default extract destination in the Firmware extractor of the Utility panel
Bugfixes:
Samsung: fixed the Auto Detect feature for newer phones on the Firmware Update panel
Core: fixed various bugs in the generic file downloader
Core: fixed a bug which could cause crashes during application start if specific Anti-Virus softwares were used
MTK: added OFP file support for Update Firmware for Oppo phones
Motorola: we're hosting blankflash files for Motorola's Boot Repair procedure from now (files can be downloaded from both the Boot Repair's procedure panel and from the Downloads menu as well)
LG: added Root procedure for LG devices with MTK SoCs (from bootrom mode)
Utility panel: a list of supported file types (firmware pack types) is now shown on the Firmware Extactor panel
It took us over 6 months to test and refine but now our Qualcomm EDL module refactor is released and live. Using official documentation, and a lot of experience and data from previous procedures, we are excited to present our refactored features:
New CPU identification logics
Automatic programmer selection: completely rewritten analysis and assignment logics to ensure that Chimera always selects the correct programmer for every device
New programmers: by now we have over 7200 verified and categorised programmers for more than 150 brands
Bugfixes:
Xiaomi: fixed a bug in Patch IMEI procedure for MTK SoC (mainly Redmi Note 11S 4G/POCO M4 Pro 4G /fleur/ was affected)
Without Test Point: Chimera can automatically change to bootrom mode (soft brick) for most Samsung MTK models (if possible)! We always focused on easy and user friendly solutions and this update means that you can service a lot more devices with Chimera just using a cable, without hardware disassemble.
Automatically fix devices with damaged GPT (bricked)
Added a new Set Knox Guard State procedure
Major changes were done in the Samsung module to help future improvements
Generic MTK:
Various improvements were implemented for the Repair IMEI procedure
Generic Qualcomm:
Retry programmer selection and resend automatically where it's possible (without using the test point again)
Added a new warning dialog to reconnect the battery after a successful programmer upload
Added a new fail-safe mechanism to communicate with programmers that do not strictly comply with the firehose protocol
Samsung Galaxy Tab A7 Lite (SM-T225, SM-T225C, SM-T225N, SM-T227)
*: The procedure is available from normal mode and Chimera will try to Soft Brick the device to put it in bootrom mode. If for some reason Soft Bricking doesn’t work, you will have to hardware Test Point to achieve bootrom mode.
Did anyone notice that we skipped the last biweekly update? It happens when our developers are too busy working on a big update that's coming soon!
Free IMEI Blacklist Checks
Starting from now, our users will get free IMEI blacklist checks with any Chimera licence they buy! You will get 20 free checks for each Samsung licence, 50 checks for each Pro licence and 100 checks for each Premium licence. You can run IMEI checks on the web dashboard (after login) and in Chimera, in the Utilities section. We also reduced the price from 7 to 5 CRD per check!
New features and improvements:
Samsung: additional improvements in the soft-brick (enter bootrom without TP) mechanism when executing bootrom mode procedures for MTK phones
LG: additional check was implemented into the FRP Remove procedure to avoid false-positive results of this function on Qualcomm phones
LG: an extra check was implemented into the IMEI Repair procedure as well to avoid false-positive results of this function on MTK phones
Generic MTK: now using additional properties to improve phone identification
Xiaomi: Patch IMEI procedure is disabled for MTK phones where it's definitely won't work
Xiaomi: renamed some of the procedures to be more user friendly
Huawei: rephrased dialog messages which pop up during procedure executions for Hisi/Kirin phones
Chimera Utility: usability of the EasyFirmware downloader was improved: you can access and download more files from now, but due to the EF's internal behavior we're forwarding the actual download link to your web browser which will handle the download
Bugfixes:
Generic MTK: fixed a bug when restoring backups that could fail with "Internal Error"
Xiaomi: fixed a bug when handling phones in sideload mode
Chimera Utility: fixed a bug in the destination path selector of the Firmware Extractor
Added a new FRP Remove solution for OPPO phones with Qualcomm SoCs. It's available from EDL mode.
We can't provide an exact supported model list, because it's a generic solution which utilises a custom feature of the Qualcomm programmers.
Based on our current programmer database we've collected a list of the supported SoCs below. Please note: this solution might not work on every device that is equipped with the listed SoCs.
Qualcomm Snapdragon 450
Qualcomm Snapdragon 460
Qualcomm Snapdragon 662
Qualcomm Snapdragon 680 4G
Qualcomm Snapdragon 720G
Qualcomm Snapdragon 750G
Qualcomm Snapdragon 765G
Qualcomm Snapdragon 865
Qualcomm Snapdragon 888
The new solution uses Oppo programmers from the official firmware packs, which are named like "prog_firehose_ddr_fwupdate.elf". If Chimera can't provide you a suitable programmer you can look inside a firmware pack and pick one manually. You can use Chimera's own Firmware Extractor (Utility) for this. Be aware that the procedure can take a long time to execute (10-15 minutes) and removing the phone during the process will make the phone unable to boot. This long process usually happens only once on a device.
You're welcome to post your experience and results to our
Added a new Bypass Mi Account procedure which is available from sideload mode and you can use it to skip the Setup Wizard app on those phones. It doesn't remove the Mi Account and the phone will be locked again after a firmware update. Xiaomi started to close this option recently via firmware updates, so it's mostly supported on phones with older firmware versions.
Supported models:
Xiaomi 12 Pro (zeus)
Xiaomi 11T Pro (vili)
Xiaomi Redmi Note 11E Pro/Redmi Note 11 Pro 5G/POCO X4 Pro 5G (veux)
Xiaomi Poco X3 Pro (vayu)
Xiaomi Mi 10 (umi)
Xiaomi Redmi Note 10 Pro/Pro Max (sweetin)
Xiaomi Mi 11 Pro/Ultra/Mi 11 Ultra (star)
Xiaomi Redmi Note 11 (spes)
Xiaomi Mi 11 Lite 5G (renoir)
Xiaomi Redmi K20 Pro/Mi 9T Pro (raphael)
Xiaomi Mi 11 LE/Xiaomi 11 Lite 5G NE (lisa)
Xiaomi Redmi Note 9 4G/Redmi 9T/Redmi 9 Power (lime)
Xiaomi Redmi Note 9 Pro 5G/Mi 10T Lite/Mi 10i (gauguin)
Xiaomi Redmi Note 9 Pro Max (excalibur)
Xiaomi Mi 11 Lite (courbet)
Xiaomi Mi 10 Pro (cmi)
Xiaomi Poco M3 (citrus)
Xiaomi Redmi K30S Ultra/Mi 10T/Mi 10T Pro (apollo)
Xiaomi Redmi 10C (fog)
Xiaomi POCO F3/Redmi K40/Mi 11X (alioth)
Xiaomi Redmi Note 9 Pro (joyeuse)
Xiaomi Redmi Note 9 Pro (India) (curtana)
Xiaomi Mi Note 10 Lite (toco)
Xiaomi Poco X3 NFC (surya)
Xiaomi Redmi Note 10 Pro (sweet)
Xiaomi Redmi Note 10 (mojito)
Xiaomi Redmi K20 (davinci)
Xiaomi Redmi Note 8 (ginkgo)
Xiaomi Mi 9 (cepheus)
Dynamic Harmony Cable by Chimera
Certain Huawei models at certain firmware level need a so-called Harmony Cable if you want to access the phone in factory mode. Using Chimera and the Dynamic Harmony Cable you will be able to handle the PC-phone communication without removing and reinserting the USB cable. This will save you time during the procedure, it also reduces errors due to forgotten or wrongly executed cable insertion.
Instead of buying expensive devices, there is an option to buy and modify an inexpensive board. Here is our
Samsung: refinements were added to Read Codes Online procedure for phones with MTK SoCs
Samsung: procedure buttons now better reflect the procedures availability in different connection modes
Generic MTK: new sources were added to collect Android properties for better phone identification
Bugfixes:
Xiaomi: fixed a bug in the Bypass Mi Account procedure
Xiaomi: to avoid having procedures incorrectly marked as successful, we've removed the Bootloader Unlock procedure from MTK phones where we can be sure that it won't work properly
Generic MTK: fixed a bug when using Store / Restore Backup procedure and the phone's partition table contains two partitions with identical names
Core: fixed a UI bug when displaying credit costs of procedures in the procedure frame area
Chimera Utility: added a workaround to support OFP extraction for files with non-standard internal structure
Added Read Codes Online, IMEI Repair, PatchNet/PatchCert, Clear Live Demo Unit Flag for the following Exynos models:
Samsung Galaxy S20 (SM-G980F)
Samsung Galaxy S20 Plus (SM-G985F)
Samsung Galaxy S20 5G (SM-G981B)
Samsung Galaxy S20 Plus 5G (SM-G986B)
Samsung Galaxy S20 Ultra 5G (SM-G988B)
Samsung Galaxy Note 20 (SM-N980F)
Samsung Galaxy Note 20 Ultra (SM-N985F)
Samsung Galaxy Note 20 5G (SM-N981B)
Samsung Galaxy Note 20 Ultra 5G (SM-N986B)
Samsung Galaxy S20 FE (SM-G780F)
These procedures are based on a brand new method and they work on the latest firmwares as well!
The device needs to be ROOTED but you can do that with the Chimera Utility.
Whether this function is available depends on the security settings of the phone, and it is not determined by the brand, model, or SoC. Chimera will examine these parameters when you connect a device, and if the phone is compatible, the procedure button will be displayed. Please note: this is a patch, any OTA or firmware update will return the device to its original state.
Bugfixes:
Qualcomm: fixed a bug which made impossible to detect Vivo, Xiaomi, Motorola phones in ADB mode
Samsung: fixed a bug in Samsung's Firmware Filter dialog during Firmware Update procedure
MTK: fixed a bug when detecting bootloader unlock state for Xiaomi models
MTK: fixed a bug when incorrectly displaying the missing MTK driver notification
MTK: fixed a progress bar issue
We've created a video about the new MTK Patch IMEI procedure, you can
